Walter I de Clifford [[Clifford-1632]] and Walter de Clifford [[FitzRichard-94]]
Medieval Lands - has all the siblings as "FitzRichard" - [http://fmg.ac/Projects/MedLands/ENGLISHNOBILITYMEDIEVAL3.htm#WalterFitzRicharddied1190B Walter I FitzRichard].
Thanks for checking on that, Rev Daniel (-: