Curt Hofemann, curt_hofemann@@yahoo.com, in a post-em, states:
MANASSER, 2nd son. (Recherches sur le Doomsday par Lechaude d'Anisy i p.151). Succeeded to Marden and Nutbourne, Sussex, and held 2 fees in Sussex of the Earl of Arundel, 1166 (Lib. Rub. Scacc. fo.85). Living 1172, when he was certified to be holding 1 fee in Normandy by serjeanty of finding ward for the town of Falaise (Lib. Rub. Scacc. fo.161). [Contained in a message by Chris Phillips, 6 Oct 2001, to soc.genealogy.medieval]