De Buinbhíol
de BUINBHÍOL—XI—de Boneville, Banville, Bonfield, Bunfield, etc.; i.e., 'of Bonville' in Normandy; the name of a Norman family who settled in Ireland soon after the invasion. In the early part of the 14th century, John de Boneville was seneschal of the counties of Kildare and Carlow, and the de Bonevilles were among the earliest Anglo-Norman settlers in Co. Limerick. For more than three centuries, the name has been associated chiefly with the district around Killaloe.
Alphabetical Index to Irish Surnames