Geoffrey DU MARAIS, Lord of Killorglin, Justiciar of Ireland 
- Born: , , Ireland
- Marriage: Unknown
- Died: 1245, , , Ireland
Another name for Geoffrey was MARISCO, MONTEMARISCO.
Sources, Comments and Notes:
"Theobald le Botiller, also known as Theobald Boteler, Theobald Butler, 2nd Baron Butler (by 1201 - July 19, 1230) was the son of Theobald Walter, 1st Baron Butler and Maud le Vavasour. He had livery of his lands on 18 July 1222.
Marriage and issue
Theobald married firstly by 1222 Joan du Marais (or Marisco) daughter of Geoffrey du Marais. Their son was:
Theobald Butler, 3rd Chief Butler of Ireland (d. 1248). He married Margery de Burgh, daughter of Richard Mor de Burgh and Egidia de Lacy, and had issue. .... "
"Eve de Bermingham, suo jure Lady of Offaly (died between June 1223/December 1226), was a Norman - Irish heiress, ...
When he died in 1211, she took a third husband, Geoffrey de Marisco (du Marais), who held the office of Justiciar of Ireland from 1215 to 1221. Her son Maurice would later hold the office from 1232 to 1245. By her third husband, she had at least one son:
Robert de Marisco, married Christiana de Ridelsford, by whom he had a daughter, Christiana de Marisco (1234-1312).
It is not known whether Geoffrey's daughter, Joan du Marais, first wife of Theobald le Botiller, was Eve's daughter, or his daughter by an earlier, unrecorded marriage. ..."
Source <Genealogical memoir of the family of Montmorency, styled De Marisco or Morres> Par Hervey de Montmorency- Morres:
"Lord Geoffrey de Marisco makes a Crusade to the Holj land.
A. D. 1219.
Geoffrey de Marisco preparatory to his departure for the Holy land, resigned into the King's hands at Oxford , on the tuesday before the Assumption of the Blessed Virgin Anno 1219, the chief Governorship of Ireland, in presence of a great concourse of courtiers and Nobility. ..."
Source <Ways of Medieval Life and Thought: Essays and Addresses Par Frederick Maurice Powicke: