William married Geva de Burci (her second husband), who was the daughter and sole heiress of Serlo de Burcy,[1][2] feudal baron of Blagdon,[3] Somerset, which barony is sometimes stated to be of Dartington, Devon, as the caput cannot be clearly assigned exclusively to either place.[4] Her dowry consisted of Somerset Manor of Woodspring.[2][1]
Geva's first husband was Martin de Turribus Lord of Cemais (died fl. 1090's) for whom she produced a son and heir, Robert fitz Martin (died 1159),
List of nobles and magnates of England in the 13th century
William's daughter Emma was heiress to the Stogursey: Manors
within the feudal barony of Stogursey.[6][7]
Emma of Falaise, was married firstly to William Fizhumphrey, then married William de Courcy (died about 1114), to whose descendants the barony of Stogursey passed.
Katharine Keats-Rohan[8] argues instead that Sibyl of Falaise was the younger daughter of William de Falaise and Geva de Burcy. William Valentine Lloyd states she was the niece of Henry I of England. [9]
In the Proceedings by Somersetshire Archaeological and Natural History Society Publication date 1919, the charter of William de Falaise, of Willelmus de Faleisia a witness to his charter of William de Falaise, was his daughter Sibile.[1] In his will he bequeaths everything to his wife Geva, there is no separation of his property to any children.
It records the following:
They signed of William de Falaise, Emma, Sibile, Geva the wife of William. [10][1]
Keats-Rohan, K. S. B. (2002). Domesday Descendants: A Prosopography of Persons Occurring in English Documents, 1066–1166: Pipe Rolls to Cartae Baronum. Ipswich, UK: Boydell Press. ISBN0-85115-863-3.
