A Welsh Marcher Lord, Lord Lanstephan fought, along with his older brother William, and half-brother Robert FitzStephen, constable of Cardigan, under Robert FitzMartin at the Battle of Crug Mawr in Wales in 1136.
Llansteffan Castle overlooks the River Tywi estuary where it enters Carmarthen Bay. It was captured by Maredudd ap Gruffydd in 1146 against the forces of Maurice FitzGerald and his brother William, Lord of Emlyn who were the leading Norman settlers of the region. The castle was retaken by the Normans in 1158.
Diarmait Mac Murchada (Dermot MacMurrough), the deposed King of Leinster who had been exiled by the High King of Ireland, sought Cambro-Norman assistance to regain his throne. Lord Lanstephan participated in the resulting 1169 Norman invasion of Ireland. He assisted his younger half-brother Robert Fitz-Stephen in the Siege of Wexford (1169). His nephew Raymond was Strongbow's second-in-command and had the chief share both in the capture of Waterford and in the successful assault on Dublin in 1171. Lord Lanstephan and his son's the Fitzmaurices also fought in this battle.
Maurice FitzGerald (Lord Llanstephan) is sometimes said to have married Alice, a supposed daughter of Arnulf de Montgomery. There is no evidence that Arnulf left any descendants, however, and the claim that a daughter of his married FitzGerald dates no earlier than the 19th century. Maurice FitzGerald's children were:
The original Earldom of Desmond in the province of Munster was based on landholdings belonging to the descendants of Maurice's eldest son Thomas FitzMaurice , Lord OConnello. Thomas's son John Fitzmaurice FitzThomas , who was killed in the Battle of Callann, became the first Baron Desmond. Others from this line include the Knights of Glin and Knights of Kerry.
Maurice FitzGerald was the second son of Gerald Fitzwalter known as Gerald de Windsor, Constable of Pembroke Castle by his wife, Nest ferch Rhys, Princess of Deheubarth and a member of the Welsh royal House of Dinefwr.
|Ancestors of Maurice FitzGerald, Lord of Lanstephan|