Crest: A dexter hand couped above the wrist and erect, Proper, grasping a crescent, Argent
Motto: I Hope To Speed
Origin of Name: Placename, Renfrewshire
Historic Seat: Cathcart Castle, Glasgow
Clan Chief: The Rt. Hon. The Earl of Cathcart
The name would have come from 'of Cathcart' referring to the place. The spelling of names may have changed over the centuries.