Ó Maol Fábhail, anglicised as Lavelle is an Irish surname. It can also be found as O'Mullawill, or rarely, as Mulfall or Mac Fall. Lavelle of Connacht The surname Lavelle is found mainly in Connacht, particularly in County Mayo, where Griffith's Valuation of 1857 recorded 286 Lavelle households. Many were located on Achill Island. It is found sparsely elsewhere in Ireland. The Lavelles of Mayo and elsewhere in Connacht are believed by MacLysaght to be descendants of the clan Ó Maol Fábhail, a surname phonetically anglicised as Lavelle. On page 370 of Ruaidhrí Ó Flaithbheartaigh's Iar Connacht, James Hardiman quotes the manuscript called Crichaireacht cinedach nduchasa Muintiri Murchada, which states that O'Maelampaill of Donaghpatrick is the brehon of O'Flaherty. Hardiman notes concerning this family states: O'Maelampaill. This name is written Ó Maol Fábhail in Dubhaltach Mac Fhirbhisigh's copy of this tract. The name is still extant, but pronounced O'Mullawill, and sometimes anglicised Lavelle. According to the tradition in the barony of Murrisk, or Iar-Umhall (Umaill) this family is of Danish descent, but this tradition does not appear to be entitled to much credit. Of Donaghpatrick, Hardiman states: Donaghpatrick, Domnaig Padraig, i.e., of St. Patrick's church. This is the name of a parish in the north of the barony of Clare. Its original church stands in ruins near the margin of Lough Hackett, which is the Loch Cime of the old Irish writers. (p. 370) The parish of Donaghpatrick is between the towns of Headford and Tuam. The surname derived from the Gaelic personal name, Maol Fábhail, its form denoting descent from a person named in honour of a Saint Fábhail. Nineteen persons of the name are cited by Nollaig Ó Muraíle (pp. 479–480, volume V Leabhar na nGenealach) but none seem to have been saints. Elsewhere, (pp. 450–451, volume I) he has them as Ui Mhaoil Fhábhaill (or Maoil Ampuill). Based upon a variant manuscript of Crichaireacht cinedach nduchasa Muintiri Murchada, it also cites the family as the brehons or judges of the clan Ó Flaithbheartaigh, c. 1100. Lavelle of Armagh The Annals of Inisfallen record that in 1102, The son of Mac Lochlainn with the Cenél Eógain went into Ulaid, and their camp was attacked when unguarded, and the king of Carraig Brachide, namely, Ua Maíl Fhábaill, and the son of Conrach, son of Eógan, and many others were slain. Twelve Lavelle households were recorded by the same survey