Osbert de Trussell was born in England and died after 1165 England of unspecified causes.
Osbert Trussel, 1165, was the Lord of Billesley in Warwickshire, which he held of the earl of Warwick. According to Dugdale, "from this Osbert is it that the several families of Trussel, viz. Of Cublesdon and Acton-Trussell in Staffordshire; of Flore and Gayton in Northamptonshire; of Aylmesthorpe in Leicestershire; and of this and other places in Warwickshire are descended." Osbert's son, William, married Agnes, one of the three co-heiresses of Robert Fitz Otes of Locksley, whose inheritance was distributed to them in 1178. William was succeeded by Richard who joined the armed rebellion against King John in retinue of his suzerain the earl; and another Richard, slain at Evesham on the Barson's side. Because of this he lost Billesley and his other lands; but "William his brother went away with the estate," and married the heiress of Cublesdon in Staffordshire, Rose Pantulf. Their son and heir was Sir William who married Maud de Mainwaring. ~The Battle Abbey Roll, Vol. III p. 160
Children
| Name | Birth | Death | Joined with |
| William de Trussell (-aft1178) | England | 1178 England | Agnes de Locksley (-saft1178) |
Siblings