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class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Welsh legendary figure</div> <p> <b>Seithenyn </b> (sometimes spelt <b>Seithennin</b>) sometimes known as <i>Seithenyn of the feeble mind</i> is a figure from <a href="/wiki/Wales" title="Wales">Welsh</a> legend, apparently contemporary with King <a href="/wiki/Gwyddno_Garanhir" title="Gwyddno Garanhir">Gwyddno Garanhir</a>. He is mentioned in a poem in the <a href="/wiki/Black_Book_of_Carmarthen" title="Black Book of Carmarthen">Llyfr Du Caerfyrddin (Black Book of Carmarthen)</a>, but becomes the protagonist of the story in a later version of the legend, in which he was responsible for the sea-defences of <a href="/wiki/Cantre%27r_Gwaelod" title="Cantre'r Gwaelod">Cantre'r Gwaelod</a> (English: <span lang="en">The Lowland <a href="/wiki/Cantref" title="Cantref">Hundred</a></span>) or <i>Maes Gwyddno</i> (English: <span lang="en">the Plain of Gwyddno</span>), in the kingdom of the legendary Gwyddno Garanhir, but neglected them one night because of his drunkenness. Because of this neglect, the sea overran it.<sup id="cite_ref-FOOTNOTERhys1901382–384_1-0" class="reference"><a href="#cite_note-FOOTNOTERhys1901382–384-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Cantre'r Gwaelod is said to lie beneath the waters of <a href="/wiki/Cardigan_Bay" title="Cardigan Bay">Cardigan Bay</a> off the coast of <a href="/wiki/Ceredigion" title="Ceredigion">Ceredigion</a> near <a href="/wiki/Aberdyfi" title="Aberdyfi">Aberdyfi</a>, <a href="/wiki/Wales" title="Wales">Wales</a>. Seithenyn (named in some later sources as being the son of Seithyn Saidi),<sup id="cite_ref-FOOTNOTERhys1901388_2-0" class="reference"><a href="#cite_note-FOOTNOTERhys1901388-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> was in charge of the embankment there, and as such, it was his failure to discharge his duties which led to its drowning. Seithenyn is also listed in the <a href="/wiki/Welsh_Triads" title="Welsh Triads">Triads of the Island of Britain</a> as one of the <i>Three Disgraceful Drunkards of the Isle of Britain</i>.<sup id="cite_ref-FOOTNOTEBromwich2016_3-0" class="reference"><a href="#cite_note-FOOTNOTEBromwich2016-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>a<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/List_of_Welsh_saints" title="List of Welsh saints">Welsh saint</a> <a href="/wiki/Saint_Tudno" class="mw-redirect" title="Saint Tudno">Saint Tudno</a> (founder and patron of <a href="/wiki/Llandudno" title="Llandudno">Llandudno</a>) may have been Seithenyn's son.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2023)">citation needed</span></a></i>]</sup> </p><p>He appears as a character in <a href="/wiki/Thomas_Love_Peacock" title="Thomas Love Peacock">Thomas Love Peacock</a>'s 1829 Arthurian novel <i><a href="/wiki/The_Misfortunes_of_Elphin" title="The Misfortunes of Elphin">The Misfortunes of Elphin</a></i>.<sup id="cite_ref-FOOTNOTEPeacock1829_5-0" class="reference"><a href="#cite_note-FOOTNOTEPeacock1829-5"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/John_Rhys" class="mw-redirect" title="John Rhys">Sir John Rhys</a> posited a connection between Seithenyn and the <a href="/wiki/Setantii" title="Setantii">Setantii</a>, a <a href="/wiki/Celt" class="mw-redirect" title="Celt">Celtic</a> tribe living in what is now the north west of <a href="/wiki/England" title="England">England</a>.<sup id="cite_ref-FOOTNOTERhys1901385_6-0" class="reference"><a href="#cite_note-FOOTNOTERhys1901385-6"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Seithenyn&action=edit&section=1" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text">Triad 37 reads "The three disgraceful drunkards on the Isle of Britain: First, Ceraint, the drunken king of Siluria, who in drunkenness burned all the corn far and near over all the country, so that a famine for bread arose. Second, Vortigern, who in his drink gave the Isle of Thanet to Horsa that he might commit adultery with Rowena his daughter, and who also gave a claim to the son that he had by her to the crown of Lloegria; and added to these, treachery and plotting against the Cambrians. Third, the drunken Seithynin, son of Seithyn Saida king of Dimetia, who in his drunkenness let the sea over the hundred of Gwaelod so that all the houses and land which were there, were lost; where before that event sixteen fortified towns were reckoned there, superior to all the towns and fortifications in Cambria, with the exception of Caerllion upon Usk. The hundred of Gwaelod was a dominion of Gwydnaw Garanhir, king of Cardigan. This event happened in the time of Ambrosius. The people who escaped from the inundation landed in Ardudwy, in the country of Arvon, and the mountains of Snowdon, and other places, which had not been inhabited before that period."</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Seithenyn&action=edit&section=2" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626" /><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-FOOTNOTERhys1901382–384-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTERhys1901382–384_1-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFRhys1901">Rhys 1901</a>, pp. 382–384.</span> </li> <li id="cite_note-FOOTNOTERhys1901388-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTERhys1901388_2-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFRhys1901">Rhys 1901</a>, p. 388.</span> </li> <li id="cite_note-FOOTNOTEBromwich2016-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEBromwich2016_3-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFBromwich2016">Bromwich 2016</a>.</span> </li> <li id="cite_note-FOOTNOTEPeacock1829-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEPeacock1829_5-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFPeacock1829">Peacock 1829</a>.</span> </li> <li id="cite_note-FOOTNOTERhys1901385-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTERhys1901385_6-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFRhys1901">Rhys 1901</a>, p. 385.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Bibliography">Bibliography</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Seithenyn&action=edit&section=3" title="Edit section: Bibliography"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFBromwich2016" class="citation book cs1">Bromwich, Rachel (15 June 2016). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=hqzgoQEACAAJ"><i>Trioedd Ynys Prydein: The Triads of the Island of Britain</i></a>. University of Wales Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-78316-305-2" title="Special:BookSources/978-1-78316-305-2"><bdi>978-1-78316-305-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Trioedd+Ynys+Prydein%3A+The+Triads+of+the+Island+of+Britain&rft.pub=University+of+Wales+Press&rft.date=2016-06-15&rft.isbn=978-1-78316-305-2&rft.aulast=Bromwich&rft.aufirst=Rachel&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DhqzgoQEACAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASeithenyn" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFRhys1901" class="citation book cs1">Rhys, John (1901). <a rel="nofollow" class="external text" href="https://archive.org/details/celticfolklorewe01rhys/page/384/mode/1up?ref=ol&view=theater"><i>Celtic folklore, Welsh and Manx</i></a>. Oxford : Clarendon Press. p. 385<span class="reference-accessdate">. Retrieved <span class="nowrap">4 February</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Celtic+folklore%2C+Welsh+and+Manx&rft.pages=385&rft.pub=Oxford+%3A+Clarendon+Press&rft.date=1901&rft.aulast=Rhys&rft.aufirst=John&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fcelticfolklorewe01rhys%2Fpage%2F384%2Fmode%2F1up%3Fref%3Dol%26view%3Dtheater&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASeithenyn" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFPeacock1829" class="citation book cs1">Peacock, Thomas Love (1829). <i>The Misfortunes of Elphin</i>. Thomas Hookham.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Misfortunes+of+Elphin&rft.pub=Thomas+Hookham&rft.date=1829&rft.aulast=Peacock&rft.aufirst=Thomas+Love&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASeithenyn" class="Z3988"></span></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Seithenyn&oldid=1253571401">https://en.wikipedia.org/w/index.php?title=Seithenyn&oldid=1253571401</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Medieval_Welsh_literature" title="Category:Medieval Welsh literature">Medieval Welsh literature</a></li><li><a href="/wiki/Category:Welsh-language_literature" title="Category:Welsh-language literature">Welsh-language literature</a></li><li><a href="/wiki/Category:Welsh_mythology" title="Category:Welsh mythology">Welsh mythology</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_matches_Wikidata" title="Category:Short description matches Wikidata">Short description matches Wikidata</a></li><li><a href="/wiki/Category:Use_dmy_dates_from_April_2022" title="Category:Use dmy dates from April 2022">Use dmy dates from April 2022</a></li><li><a href="/wiki/Category:Articles_containing_explicitly_cited_English-language_text" title="Category:Articles containing explicitly cited English-language text">Articles containing explicitly cited English-language text</a></li><li><a href="/wiki/Category:All_articles_with_unsourced_statements" title="Category:All articles with unsourced statements">All articles with unsourced statements</a></li><li><a href="/wiki/Category:Articles_with_unsourced_statements_from_February_2023" title="Category:Articles with unsourced statements from February 2023">Articles with unsourced statements from February 2023</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 26 October 2024, at 18:13<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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