Individual Details

John FitzGeoffrey, Lord of Shere and Justiciar of Ireland (1205? in Shere, Surrey – 23 November 1258), was the son of Geoffrey Fitz Peter, 1st Earl of Essex and Aveline de Clare, daughter of Roger de Clare, 3rd Earl of Hertford & his wife Maud de Saint-Hilaire. He was Justiciar of Ireland. He was not entitled to succeed his half-brother as Earl of Essex in 1227, the Earldom having devolved from his father's first wife. He was the second husband of Isabel Bigod, daughter of Hugh Bigod, 3rd Earl of Norfolk, a Magna Carta surety, and Maud Marshal. They had six children, one being Maud who married William de Beauchamp, 9th Earl of Warwick
Note: The males took the FitzJohn surname ("fitz" mean "son of").

John FitzJohn of Shere (?-1275). m Margary, daughter of Philip Basset of Wycombe (?-1271).

Richard FitzJohn of Shere (?-1297). Lord FitzJohn 1290. m as her first husband, Emma (?-1332).

Maud FitzJohn (? - 16/18 April 1301). Married firstly to Gerard de Furnivalle, Lord of Hallamshire (?-1261). Married secondly to William de Beauchamp, 9th Earl of Warwick, son of William de Beauchamp of Elmley, Worcestershire & his wife Isabel Mauduit. Had issue.

Isabel m Robert de Vespont, Lord of Westmoreland (?-1264). Had issue.

Aveline (?-1274) m Walter de Burgh, Earl of Ulster (?-1271). Had issue, including Richard Og de Burgh, 2nd Earl of Ulster who in turn married Margaret de Burgh, by whom he had ten children.

Joan (?- 4 April 1303) m Theobald le Botiller of Thurles, Nenagh (1242-1285). Had issue, from whom descend the Butler Earls of Ormond

Birth	Ca 1208
Marriage	By 1234	Isabel Bigod
Death	23 Nov 1258	Norfolk, England
Burial		Shouldam Priory, Norfolk, England

Spouse	Isabel Bigod (1212 - 1250)
Child	Maud Fitz John ( - 1301)

Father	Geoffrey Fitz Piers 3rd Earl of Essex (1162 - 1213)
Mother	Aveline de Clare ( - 1225)
Sibling	Hawise Fitz Geoffrey ( - 1243)