Maurice FitzGerald, Lord of Lanstephan

Maurice FitzGerald
A drawing of Maurice FitzGerald from a manuscript of the Expugnatio Hibernica, an account of the 1169 invasion of Ireland written in 1189 by Maurice's nephew, Gerald of Wales.
Born	c. 1105
Died	1 September 1176
Title	Lord of Maynooth, Naas, and Lanstephan
Nationality	Cambro-Norman
Wars and battles	Battle of Crug Mawr Norman invasion of Ireland Siege of Wexford (1169)
Issue	Gerald FitzMaurice FitzGerald Alexander FitzMaurice FitzGerald William FitzMaurice FitzGerald Maurice FitzMaurice FitzGerald Thomas FitzMaurice FitzGerald Robert FitzMaurice FitzGerald Nest FitzGerald
Parents	Gerald de Windsor Nest ferch Rhys

Maurice FitzGerald, Lord of Maynooth, Naas, and Llanstephan (c. 1105 – September 1176) was a medieval Cambro-Norman baron and a major figure in the Norman invasion of Ireland.

A Welsh Marcher Lord, Lanstephan fought under Robert FitzMartin at the Battle of Crug Mawr in Wales 1136.

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. 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. Lanstephan and his son also fought in this battle.

FitzGerald 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. FitzGerald's children were: