Juliana FitzMaurice was born on 12 April 1266 in Dublin, Ireland, the eldest daughter of Maurice FitzGerald II, 3rd Lord of Offaly, Justiciar of Ireland and Maud de Prendergast. She had a sister Amabel who married but was childless. Her first cousin was John FitzGerald, 1st Earl of Kildare. Her paternal grandparents were Maurice FitzGerald I, 2nd Lord of Offaly and Juliana, and her maternal grandparents were Sir Gerald de Prendergast of Beauvoir and Matilda de Burgh, daughter of Richard Mor de Burgh, Lord of Connacht and Egidia de Lacy. Juliana's maternal ancestors included Niall of the Nine Hostages, Brian Boru, Dermot McMurrough, and Maud de Braose. Juliana's father, Maurice FitzGerald, was married twice, first to Maud de Prendergast and secondly to Emmeline Longespee. It has been some source of contention as to which of his two wives had issue Juliana. However, at her death, Emmeline Longespee did not mention Juliana as her daughter and heir; rather, Emmeline's heir was her niece, Maud la Zouche, wife of Robert la Zouche, 1st Lord Holland. It has been concluded by several reputable researchers that Juliana's mother was Maurice FitzGerald's first wife, Maud de Prendergast. Supporters for Emmeline Longespee being the mother have yet to produce any counter-evidence beyond hearsay.
Marriages and issue
In 1278, at the age of 12, Juliana married her first husband, Thomas de Clare, Lord of Thomond, Lord of Inchiquin and Youghal. He was the second eldest son of Richard de Clare, 5th Earl of Hertford, 2nd Earl of Gloucester and Maud de Lacy. Thomas was a friend of King Edward I of England, with whom he went on a Crusade. He held many important posts including the Office of Governor of Colchester Castle, Governor of the City of London. He was also the commander of the English forces in Munster, Ireland, and on 26 January 1276, he was granted the lordship of Thomond. He was born in 1245, which made him about eighteen years older than Juliana. Throughout their marriage, the couple lived in both Ireland and England. It is recorded that on 5 May 1284, King Edward notified his lieges and bailiffs in Ireland of the attorneys who were to act on behalf of Thomas and Juliana as they were in England at the time. This arrangement continued for another three years except while they were residing in Ireland. Thomas and Juliana had four children:
The era was marked by unrest and strife as civil war was waged between rival factions of the powerful O'Brien clan. In 1277, Juliana's husband had his former ally Brian Ruad, the deposed King of Thomond, hanged for treason at Bunratty. Thomas died on 29 August 1287, leaving Juliana a widow at the age of twenty-four with four small children; the youngest, Margaret was not quite five months old. On an unknown date she married her second husband, Nicholas Avenel. He presumably died before 11 December 1291/16 February 1292, as this is when she married her third husband, Adam de Cretynges.
