General Notes

High Treasurer of Ireland
Lord Kilcullen
1st Baron Portlester
"...from the Eustaces descended the Lords and Baron of Kilcullen,, Lord Baron Portlester, and the Viscounts of Baltinglass."
"Barony of Portlester. - Sir Eustace de Poher died A.D. 1311. From his eldest son have descended the Lords Power and Curraghmore, and from his second the FitzEustaces, or Eustaces. "Mark that the Eusteys descended lineally of the aforesaid Lord Ustas, which were very noble men in those days of knighthood and ability." The representative of the Eustaces in the fifteenth century was Sir Rowland FitzEustace, Lord of Kilcullen, Lord Deputy to the Duke of Clarence, and Lord High Treasurer of Ireland, who, on the 5th of March, 1462, was created by patent "Lord and Baron of Portlester," to him and to the heirs male of his body. He died 14th December, 1496 leaving no male issue. His daughter, Alison, married Gerald FitzGerald, eighth Earl of Kildare."
Sources:
- person: Renaud de Paysac (an Historical Memoir of Poher, Poer, or Power by Gabriel O'C Redmond, (1891)), Renaud de Paysac
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SOURCES: LDS FHL Ancestral File #   (familysearch.org)
WEB:
"Ancestors/Descendants of Royal Lines" (Contributors: F. L. Jacquier (History of Charlemagne by Christian Settipani); L. Orlandini,  Manuel Abranches de Soveral, Reynaud de Paysac, F.L.  J P de Palmas (Aurejac et Tournemire; Frankish line; The Complete Peerage}, Jacquier (Genealogy of Lewis Carroll, Justin Swanstrom, The Royal Families of England Scotland & Wales by Burkes Peerage; Debrett's Peerage & Baronage; Table of descendants French Canadian Genealogical Society; Families of Monfort-sur-Risle & Bertrand de Bricquebec; The Dukes of Normandy, XXXXI), A. Brabant ("Dynastie Montmorency, Michel d'Herbigny), Paul Leportier, Claude Barret, H.R. Moser (Burke Peerage), O.Guionneau, L.B. de Rouge, E. Polti, N. Danican (Britain's Royal Families; Buthlaw, Succession of Strathclyde, the Armorial 1961-62) A.Terlinden (Genealogy of the existing British Peerage, 1842), L. Gustavsson, C. Cheneaux, E. Lodge, S. Bontron (Brian Tompsett), R. Dewkinandan, H. de la Villarmois, C. Donadello; Scevole de Livonniere, H. de la Villarmois, I. Flatmoen, P. Ract Madoux (History of Morhange; Leon Maujean; Annuaire de Lorraine, 1926; La Galissonniere: Elections d'Arques et Rouen), Jean de Villoutreys (ref: Georges Poull), E. Wilkerson-Theaux (Laura Little), O. Auffray, A. Brabant (Genealogy of Chauvigny of Blot from "Chanoine Prevost Archiviste du Diocese de Troyes Union Typographique Domois Cote-d'Or 1925), Emmanuel Arminjon (E Levi-Provencal Histoire de l'Espagne Andalouse),  Y. Gazagnes-Gazanhe, R. Sekulovich and J.P. de Palmas ("notes pierfit et iconographie Insecula", Tournemire), H de Riberolles (Base Tournemire), Franck Veillon; ,(Histoire Généalogique de la Maison de Hornes, Bruxelles 1848; Notice Historique Sur L'Ancien Comté de Hornes, Gand 1850; Europäische Stammtafeln, Marburg 1978); E.Driant / "La Maison de Damas" par Hubert Lamant, 1977 (Bibliothèque municipale d'Eaubonne)
........... http://geneastar.org.