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href="https://el.wikipedia.org/wiki/%CE%93%CE%B9%CE%AC%CE%BD%CE%BF%CF%85%CF%82_%CE%92%CE%84_%CF%84%CE%BF%CF%85_%CE%A0%CE%BF%CF%85%CF%8C%CF%84%CF%83%CE%BA" title="Γιάνους Β΄ του Πουότσκ – Greek" lang="el" hreflang="el" data-title="Γιάνους Β΄ του Πουότσκ" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Janusz_II_de_P%C5%82ock" title="Janusz II de Płock – French" lang="fr" hreflang="fr" data-title="Janusz II de Płock" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Jan_II_van_P%C5%82ock" title="Jan II van Płock – Dutch" lang="nl" hreflang="nl" data-title="Jan II van Płock" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Janusz_II" title="Janusz II – Polish" lang="pl" hreflang="pl" data-title="Janusz II" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%AF%D0%BD%D1%83%D1%88_II_%D0%9F%D0%BB%D0%BE%D1%86%D0%BA%D0%B8%D0%B9" title="Януш II Плоцкий – Russian" lang="ru" hreflang="ru" data-title="Януш II Плоцкий" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%AF%D0%BD%D1%83%D1%88_II_%D0%9F%D0%BB%D0%BE%D1%86%D1%8C%D0%BA%D0%B8%D0%B9" title="Януш II Плоцький – Ukrainian" lang="uk" hreflang="uk" data-title="Януш II Плоцький" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%9B%85%E5%8A%AA%E6%96%AF%E4%BA%8C%E4%B8%96" title="雅努斯二世 – Chinese" lang="zh" hreflang="zh" data-title="雅努斯二世" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q4538307#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" 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Unsourced material may be challenged and <a href="/wiki/Wikipedia:Verifiability#Burden_of_evidence" title="Wikipedia:Verifiability">removed</a>.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Janusz+II+of+P%C5%82ock%22">"Janusz II of Płock"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Janusz+II+of+P%C5%82ock%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Janusz+II+of+P%C5%82ock%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Janusz+II+of+P%C5%82ock%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Janusz+II+of+P%C5%82ock%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Janusz+II+of+P%C5%82ock%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">March 2019</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Seal_of_Janusz_II_Prince_of_P%C5%82oc.PNG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Seal_of_Janusz_II_Prince_of_P%C5%82oc.PNG/250px-Seal_of_Janusz_II_Prince_of_P%C5%82oc.PNG" decoding="async" width="250" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Seal_of_Janusz_II_Prince_of_P%C5%82oc.PNG/375px-Seal_of_Janusz_II_Prince_of_P%C5%82oc.PNG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Seal_of_Janusz_II_Prince_of_P%C5%82oc.PNG/500px-Seal_of_Janusz_II_Prince_of_P%C5%82oc.PNG 2x" data-file-width="1431" data-file-height="1257" /></a><figcaption>Seal of Janusz II.</figcaption></figure> <p><b>Janusz II of Płock</b> (pl: <i>Janusz II płocki</i>; ca. 1455 – 16 February 1495), was a Polish prince member of the <a href="/wiki/House_of_Piast" class="mw-redirect" title="House of Piast">House of Piast</a> in the <a href="/wiki/Dukes_of_Masovia" class="mw-redirect" title="Dukes of Masovia">Masovian branch</a>. He was a duke of Warsaw, <a href="/wiki/Nur,_Poland" title="Nur, Poland">Nur</a>, <a href="/wiki/%C5%81om%C5%BCa" title="Łomża">Łomża</a>, <a href="/wiki/Liw,_Poland" title="Liw, Poland">Liw</a>, <a href="/wiki/Ciechan%C3%B3w" title="Ciechanów">Ciechanów</a>, <a href="/wiki/Wyszogr%C3%B3d" title="Wyszogród">Wyszogród</a> and <a href="/wiki/Zakroczym" title="Zakroczym">Zakroczym</a> during 1454–1471 jointly with his brothers (under regency until 1462), Duke of <a href="/wiki/P%C5%82ock" title="Płock">Płock</a>, <a href="/wiki/P%C5%82o%C5%84sk" title="Płońsk">Płońsk</a>, <a href="/wiki/Zawkrze" title="Zawkrze">Zawkrze</a> and <a href="/wiki/Wizna" title="Wizna">Wizna</a> during 1462–1471, and after the division of the paternal domains in 1471, sole ruler over Ciechanów and Łomża, since 1475 also ruler over Płock, Płońsk, Zawkrze and Wizna, since 1484 ruler over <a href="/wiki/B%C5%82onie" title="Błonie">Błonie</a>, <a href="/wiki/Tarczyn" title="Tarczyn">Tarczyn</a> and <a href="/wiki/Kamieniec,_Gostynin_County" title="Kamieniec, Gostynin County">Kamieniec</a>, since 1489 ruler over Wyszogród. </p><p>He was the eighth and youngest son of <a href="/wiki/Boles%C5%82aw_IV_of_Warsaw" title="Bolesław IV of Warsaw">Bolesław IV of Warsaw</a> and <a href="/wiki/Barbara_Aleksandr%C3%B3wna" title="Barbara Aleksandrówna">Barbara Aleksandrówna</a>, a Lithuanian princess, (granddaughter of <a href="/wiki/Vladimir_Olgerdovich" title="Vladimir Olgerdovich">Vladimir Olgerdovich</a>). His father died on 10 September 1454. </p> <div class="mw-heading mw-heading2"><h2 id="Life">Life</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Janusz_II_of_P%C5%82ock&action=edit&section=1" title="Edit section: Life"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>After their father's death, Janusz II and his siblings where place under the guardianship of their mother Barbara and Paweł Giżycki, Bishop of Płock. The regency ended in 1462, when their older brother <a href="/wiki/Konrad_III_Rudy" title="Konrad III Rudy">Konrad III</a> attained his majority and became in the legal guardian of his younger brothers. </p><p>Janusz II and his brothers formally attained their majority on 3 April 1471. As the youngest brother, in the division of the paternal domains, he received the small districts of Ciechanów, Łomża and Różan. His domains became significantly increased in 1475, when after his brother <a href="/wiki/Casimir_III_of_P%C5%82ock" title="Casimir III of Płock">Casimir III</a> was consecrated as <a href="/wiki/List_of_bishops_of_P%C5%82ock" title="List of bishops of Płock">Bishop of Płock</a> he renounced to his domains and divided them between his brothers: Janusz II received Płock, Płońsk, Zawkrze and Wizna. In the following years, his domains continue to be expanded thanks to the renunciations of his brothers: in 1484 his brother <a href="/wiki/Boles%C5%82aw_V_of_Warsaw" title="Bolesław V of Warsaw">Bolesław V</a> ceded to him the districts of Błonie, Tarczyn and Kamieniec, and in 1489 his brother Konrad III gave to him Wyszogród in exchange of his resignation over Warsaw, after the townspeople chosen Janusz II to be their new ruler after Bolesław V's death in 1488. </p><p>In foreign policy, Janusz II, in addition to his close cooperation with his brothers (especially with Bolesław V, with for many years had a co-rulership), he tried to limit the growing influence of the <a href="/wiki/Jagiellonian_dynasty" title="Jagiellonian dynasty">Jagiellonian dynasty</a>. To this end, Janusz II joined the Teutonic Order in 1472; the relationship with them must be extremely close, since the Grand Master of the Order <a href="/wiki/Johann_von_Tiefen" title="Johann von Tiefen">Johann von Tiefen</a> granted to Janusz II the title of <i>familiaris</i> since 1489. </p><p>In 1476 Janusz II together with his brother Bolesław V protested against the incorporation of <a href="/wiki/Sochaczew" title="Sochaczew">Sochaczew</a> (who was held by Anna of Oleśnica, widow of Władysław I, as a part of her <i>Qprawa wdowia</i>) to the Polish Kingdom by sending his troops to the disputed city. The King, however, had other plans, and finally Masovian Piasts had to abandon their ambitious plans. </p><p>On 7 August 1492 King <a href="/wiki/Casimir_IV_of_Poland" class="mw-redirect" title="Casimir IV of Poland">Casimir IV of Poland</a> died, and the Dukes of Masovia (who wanted to escape from the shadow of the Jagiellonian dynasty) proposed Janusz II as candidate for the crown. However, when Janusz II arrived to <a href="/wiki/Krak%C3%B3w" title="Kraków">Kraków</a>, it was certain that his candidacy for the throne was futile and Casimir IV's son, <a href="/wiki/John_I_Albert" title="John I Albert">John I Albert</a>, was elected new King. </p><p>Janusz II died on 16 February 1495 in <a href="/wiki/P%C5%82ock" title="Płock">Płock</a>, and was buried in the local Cathedral. He never married or had children. His sudden death (contemporary sources claimed that "<i>one day was healthy, the other was dead</i>") caused rumors about poisoning. However, this never can be proved. </p><p>Despite the resistance of his brother Konrad III, after his death Płock was incorporated to the Kingdom of Poland. </p> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": 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