William Peverel the Younger
He married Avicia de Lancaster (1088 – c. 1150) in La Marche, Normandy, France. She was the daughter of Roger "The Poitevin" Montgomery and Countess Almodis of La Marche. In 1114, she bore a daughter, Margaret Peverel. Another member of his family, Maude Peverel (a sister or daughter) was - by 1120 - the first wife of Robert fitz Martin.
William inherited the Honour of Peverel.
King Henry II dispossessed William of the Honour, for conspiring to poison the Earl of Chester - though historians speculate that the King wished to punish him for his 'wickedness and treason' in supporting King Stephen. The Earl died before he took possession of the Honour, and it stayed in the Crown for about a half century.