Costello

GEDCOM Note

<p><p>The Costello family who gave their name to the Barony were originally Nangles, or de Angulos who came to the area with the Anglo Normans in the 12th century. The first reference to this family is in the <a title="Annals of the Four Masters" href="http://en.wikipedia.org/wiki/Annals_of_the_Four_Masters">Annals of the Four Masters</a> in 1193. The sons of one of the first Nangles, Gilbert de Nangle, became known as the Oistealb, and gave rise to the surname Mac Oisdealbh, later MacOisdealbhaigh, <a class="mw-redirect" title="Anglicise" href="http://en.wikipedia.org/wiki/Anglicise">anglicised</a> to MacCostello. It was the first recorded instance of a Norman family assuming an Irish 'Mac' name. Thenceforward, they became thoroughly Irish.<sup id="cite_ref-2" class="reference"><a href="http://en.wikipedia.org/wiki/Barony_of_Costello#cite_note-2">[2]</a></sup></p></p><p><p>The MacCostello land was in the part of Mayo now known as the Barony of Costello until the end of the 16th century. In 1565, their seat of power was near <a title="Ballaghaderreen" href="http://en.wikipedia.org/wiki/Ballaghaderreen">Ballaghaderreen</a> (now part of <a title="County Roscommon" href="http://en.wikipedia.org/wiki/County_Roscommon">County Roscommon</a>). Their name, although the Mac has now been dropped, is a common surname in both Mayo and <a title="CountyGalway" href="http://en.wikipedia.org/wiki/County_Galway">County Galway</a> where it is usually spelt with an extra 'e' at the end.</p></p><p> </p>