Costain is a surname of English, Scottish and Manx origin.[1] When originating in Scotland and northern Ireland the surname is an Anglicisation of the Gaelic Mac Austain, meaning "son of Austin". The English surname is a reduced form of Constant or Constantine.[1]

People named Costain edit

References edit

  1. ^ a b "Costain Name Meaning and History". Ancestry.com. Retrieved 23 December 2008.