Following his marriage to the Christian <a href="https://en.wikipedia.org/wiki/Doubravka_of_Bohemia" id="mwJA" rel="mw:WikiLink" title="Doubravka of Bohemia">Doubravka of Bohemia</a>, the <a href="https://en.wikipedia.org/wiki/Paganism" id="mwJQ" rel="mw:WikiLink" title="Paganism">pagan</a> ruler of the <a href="https://en.wikipedia.org/wiki/Polans_(western)" id="mwJg" rel="mw:WikiLink" title="Polans (western)">Polans</a>, <a href="https://en.wikipedia.org/wiki/Mieszko_I" id="mwJw" rel="mw:WikiLink" title="Mieszko I">Mieszko<span id="mwKA" typeof="mw:Entity"> </span>I</a>, <a href="https://en.wikipedia.org/wiki/Christianization_of_Poland#Baptism" id="mwKQ" rel="mw:WikiLink" title="Christianization of Poland">converts to Christianity</a>, an event considered to be the <a href="https://en.wikipedia.org/wiki/History_of_Poland_during_the_Piast_dynasty" id="mwKg" rel="mw:WikiLink" title="History of Poland during the Piast dynasty">founding of the Polish state</a>.<sup about="#mwt23" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-3"}}' id="cite_ref-3" rel="dc:references" typeof="mw:Extension/ref"><a href="./April_14#cite_note-3" id="mwKw" style="counter-reset: mw-Ref 3;"><span class="mw-reflink-text" id="mwLA">[3]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-3"><cite about="#mwt20" class="citation book cs1" id="CITEREFRadio_Free_EuropeRadio_Free_Europe._Research_and_Analysis_Department1979">Radio Free Europe; Radio Free Europe. Research and Analysis Department (1979). <a class="external text" href="https://books.google.com/books?id=FQ1pAAAAIAAJ" id="mwB5o" rel="mw:ExtLink nofollow"><i id="mwB5s">The Pope in Poland</i></a>. Radio Free Europe Research. p.<span id="mwB5w" typeof="mw:Entity"> </span>97.</cite><span about="#mwt20" class="Z3988" id="mwB50" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Pope+in+Poland&amp;rft.pages=97&amp;rft.pub=Radio+Free+Europe+Research&amp;rft.date=1979&amp;rft.au=Radio+Free+Europe&amp;rft.au=Radio+Free+Europe.+Research+and+Analysis+Department&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DFQ1pAAAAIAAJ&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AApril+14"></span></span>