Costello family history hunt

Copied and pasted from HERE Costello - MacCostello, Charlestown in Co. Mayo This family are of Cambro (Welsh)-Norman descent, from the family of Gilbert DeAngulo. The name was later Gilbert N'angle, who participated in the Norman invasion of Ireland, (1167-1172 AD), with Richard deClare (Strongbow). Gilbert had two sons, Jocelyn and Costilo, and the son of the latter, known as MacOisdeaibh, (Gaelic son of Costilo) participated in the Norman invasion of Connaught in 1235, along with the deBurgos, (Burkes), and the deLacys, established the Barony of MacOisdeaibh, later MacCostello, in eastern Mayo and western Roscommon, which lasted some four hundred years. The Costello's were the first of the great Norman families in Ireland to use the "Mac" (Son of) prefix to their name. Like many other Cambro-Norman families they became "More Irish than the Irish themselves". The Barony of MacCostello is still an identifiable geopolitical district in Mayo to th...

HISTORY OF THE BARONS OF NAVAN From "A Short History of the Nangle Family" By Lt Col Frank Nangle - 1986 There have been 23 Barons of Navan, starting with Jocelyn De Angulo in 1172/73 and ending with Francis Nangle who died in Vienna in 1781. The first Nangles to come to Ireland were Gilbert De Angulo, his brother Jordon and his son Jocelyn. They were members of a large force under Hugh De Lacy which accompanied Henry II of England when he came to Ireland in October 1171. One of the reasons for the King's coming to Ireland was to check the increasing power of Strongbow (The Earl of Pembroke). With that object in view he established Hugh De Lacy in the Earldom or Palatinate of Meath, with full sovereignty. Hugh De Lacy's territory corresponded to the ancient Irish Kingdom of Meath and comprised the modern counties of Meath and Westmeath as well as parts of counties Cavan, Dublin, Kildare, Longford, Louth and Offaly. Once established Hugh De Lacy proceeded to div...