This profile page tells us that Urse d'Abitot held Orleton of Ralf d'Tosny in 1086.
Domesday is the definitive record of English land holders in 1086.
When I look up Orleton, Worcestershire, I find the holders in 1086 were not Urse d'Abitot; rather they were:
Lord in 1086: Hugh (Hubold). Tenant in Chief: Gilbert son of Turold.
Accordingly, this post may be in error. Perhaps the profile owner could either remove this data or refer us to the source of his data.