The mid-15th century English translation of the cartulary of Oseney records that "Henry Doylly ye soone of Henry Doylly…the Kynges constable" confirmed donations to Oseney abbey, for the health of "Sibille my wiffe and of Moolde my dowghter" and the souls of "…my brother Robert Doylly", by charter dated to . A writ dated 25 Aug "26 Hen III", and subsequent inquisitions, after the death of "Thomas Earl of Warwick" excluded the dower of "Philippa sometime the wife of Henry earl of Warwick and Maud sometime the wife of Henry de Oylly" and listed his lands without naming an heir.
Nn d' Oily and Margery d' Oily Brother of Gilbert d' Oyley, of Hook Norton; Edith Basset and Alice d' Oilly Half brother of Robert Fitz Edith, Baron of Okehampton From Medlands HENRY de Oilly of Hook Norton, Oxfordshire (-1163). de Oileo” founded Oseney Abbey, Oxfordshire, with the consent of “Editha uxore mea et filiis meis Henrico et Gilleberto”, by undated charter."Henricus de Oili" donated land "apud Cestretonam villam" to Eynsham abbey, for the souls of "patris mei et Edid sororis mee", by charter dated to [1152/54], witnessed by "…Nigello de Oili, Widone de Oili…"."Henricus de Oili constabularius regis" donated land in Oxfordshire to Eynsham abbey by charter dated to [1154/63].A writ dated 7 Mar "47 Hen III", after the death of "John de Plessetis alias de Plascetis earl of Warwick", notes that "Humphrey de Bohun gave the manor [of Bradenham, Buckinghamshire] in free marriage to Henry de Oylly with Maud his sister".The 1164/65 Pipe Roll records "uxor Henri de Oilli" accounting for land in Oxfordshire, presumably indicating that her husband had recently died.
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Bracton records a claim, dated 1234, by "Walterus filius Symonis" against "Thomam comitem de Warewyc" which records that "Matillis de Boun antecessor ipsius Symonis" was "uxor Henrici de Oylly" by whom she had "filium Henricum de Oylly" who died without heirs but had "sororem Margeriam" who was the mother of "Henricum…comitem de Warewyc et qui fuit pater ipsius Thome".