[2] Philippa at this point assumed control not just of the lordship of Headington but substantial dower lands in the earldom of Warwick: the castle of Brailes, Warwickshire, the manor and forest of Sutton Coldfield, Chedworth, Gloucestershire and East Knoyle, Wiltshire.

[5] As a result of the marriage, Philippa was caught up in the subsequent rebellion of Basset and Siward against King Henry III which broke out in the summer of 1233.

[6] The king treated her with civility during the hostilities, Philippa had a protection for her dower lands in December 1233 and free passage for her and her household into the Marches to join her husband in January 1234.

By the terms of the divorce Philippa reclaimed all her lands; custody of her son by Siward went to the father, but the boy was debarred from his mother's inheritance.

[8] Philippa spent the rest of her life as the widowed countess of Warwick, preferring to ignore the episode of her marriage to Siward (who died in 1248).