<a href="https://en.wikipedia.org/wiki/Pope_Martin_IV" id="mwRg" rel="mw:WikiLink" title="Pope Martin IV">Pope Martin IV</a> excommunicates King <a href="https://en.wikipedia.org/wiki/Peter_III_of_Aragon" id="mwRw" rel="mw:WikiLink" title="Peter III of Aragon">Peter III of Aragon</a><sup about="#mwt21" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-2"}}' id="cite_ref-2" rel="dc:references" typeof="mw:Extension/ref"><a href="./October_18#cite_note-2" id="mwSA" style="counter-reset: mw-Ref 2;"><span class="mw-reflink-text" id="mwSQ">[2]</span></a></sup> for usurping the crown of Sicily (a sentence renewed on 7 May and 18 November 1282).<sup about="#mwt25" 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="./October_18#cite_note-3" id="mwSg" style="counter-reset: mw-Ref 3;"><span class="mw-reflink-text" id="mwSw">[3]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-2"><cite about="#mwt18" class="citation book cs1" id="CITEREFWatt1999">Watt, J.A. (1999). "The Papacy". In Abulafia, David (ed.). <a class="external text" href="https://books.google.com/books?id=bclfdU_2lesC" id="mwB2I" rel="mw:ExtLink nofollow"><i id="mwB2M">The New Cambridge Medieval History. Volume V: c.1198-c.1300</i></a>. Cambridge, U.K.: Cambridge University Press. p.<span id="mwB2Q" typeof="mw:Entity"> </span>154. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwB2U" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwB2Y" typeof="mw:Entity"> </span><a href="./Special:BookSources/9780521362917" id="mwB2c" rel="mw:WikiLink" title="Special:BookSources/9780521362917"><bdi id="mwB2g">9780521362917</bdi></a>.</cite><span about="#mwt18" class="Z3988" id="mwB2k" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=bookitem&amp;rft.atitle=The+Papacy&amp;rft.btitle=The+New+Cambridge+Medieval+History.+Volume+V%3A+c.1198-c.1300&amp;rft.place=Cambridge%2C+U.K.&amp;rft.pages=154&amp;rft.pub=Cambridge+University+Press&amp;rft.date=1999&amp;rft.isbn=9780521362917&amp;rft.aulast=Watt&amp;rft.aufirst=J.A.&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DbclfdU_2lesC&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AOctober+18"></span></span>