Assassination of <a class="mw-redirect" href="https://en.wikipedia.org/wiki/William_I_of_Normandy" id="mwKA" rel="mw:WikiLink" title="William I of Normandy">William I of Normandy</a>.<sup about="#mwt30" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-4"}}' id="cite_ref-4" rel="dc:references" typeof="mw:Extension/ref"><a href="./December_17#cite_note-4" id="mwKQ" style="counter-reset: mw-Ref 4;"><span class="mw-reflink-text" id="mwKg">[4]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-4"><cite about="#mwt27" class="citation book cs1" id="CITEREFPetkov2003">Petkov, Kiril (2003). <a class="external text" href="https://books.google.com/books?id=Vc_1PAcOgnUC" id="mwBzU" rel="mw:ExtLink nofollow"><i id="mwBzY">The Kiss of Peace: Ritual, Self, and Society in the High and Late Medieval West</i></a>. Boston: Brill. p.<span id="mwBzc" typeof="mw:Entity"> </span>39. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwBzg" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwBzk" typeof="mw:Entity"> </span><a href="./Special:BookSources/9789004130388" id="mwBzo" rel="mw:WikiLink" title="Special:BookSources/9789004130388"><bdi id="mwBzs">9789004130388</bdi></a>.</cite><span about="#mwt27" class="Z3988" id="mwBzw" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Kiss+of+Peace%3A+Ritual%2C+Self%2C+and+Society+in+the+High+and+Late+Medieval+West&amp;rft.place=Boston&amp;rft.pages=39&amp;rft.pub=Brill&amp;rft.date=2003&amp;rft.isbn=9789004130388&amp;rft.aulast=Petkov&amp;rft.aufirst=Kiril&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DVc_1PAcOgnUC&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ADecember+17"></span></span>