After the death of his mother's childless brother Hugh d'Aubigny, 5th Earl of Arundel, he inherited jure matris the castle and honour of Arundel in 1243, by which, according to Henry VI's "admission" of 1433, he was later retrospectively held to have become de jureEarl of Arundel.[1] He was never styled as such during his lifetime, however.[2][3]
In 1258, he was one of the key English military commanders in the Welsh Marches and was summoned yet again in 1260 for further conflict against the Welsh. John vacillated in the conflicts between Henry III and the Barons. He fought on the King's side at the Battle of Lewes in 1264, where he was taken prisoner. From 1278 to 1282, his sons were engaged in Welsh border hostilities, attacking the lands of Llywelyn.
He married Maud de Verdon, daughter of Theobald le Botiller (Boteler) by his wife Rohesia de Verdonalias Rohese (daughter of Nicholas de Verdun and Clemence); by whom he had children including:
Joan FitzAlan (c. 1267 – after 6 October 1316), wife of Sir Richard of Cornwall (died 1296), an illegitimate son of Richard of England, 1st Earl of Cornwall and King of the Romans (1209–1272) (the second son of King John (1199–1216)) by his mistress Joan de Bath (alias de Valletort).
Weis, Frederick Lewis, Ancestral Roots of Certain American Colonists Who Came to America Before 1700 (lines: 70A-29, 149-29, Genealogical Pub Co; 7th edition (January 1, 1992); ISBN978-0806313672
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