Clifton m
English: transferred use of the surname, originally a local name from any of the numerous places named in Old English with the elements clif cliff, slope, riverbank + tūn enclosure, settlement. Use of this as a given name is more recent than that of CLIFFORD (SEE Clifford), and it may in some cases have been adopted as an expanded form of CLIFF (SEE Cliff).
First names dictionary. 2012.