The <i id="mwFQ"><a href="https://en.wikipedia.org/wiki/Catholicon_(trilingual_dictionary)" id="mwFg" rel="mw:WikiLink" title="Catholicon (trilingual dictionary)">Catholicon</a></i>, written in 1464 by Jehan Lagadeuc in <a href="https://en.wikipedia.org/wiki/Tréguier" id="mwFw" rel="mw:WikiLink" title="Tréguier">Tréguier</a>, is published; this is the first <a href="https://en.wikipedia.org/wiki/Breton_language" id="mwGA" rel="mw:WikiLink" title="Breton language">Breton</a> dictionary as well as the first French dictionary.