From French Stéphanie, vernacular form of Latin Stephania, a variant of Stephana, which was in use among early Christians as a feminine form of Stephanus (see Stephen). It is very popular in the United States.
English: habitational name for someone from a place called Kennington in Greater London (formerly in Surrey), Oxfordshire, or Kent. The first two are from the Old English personal name Cēna + -ing- (a connective particle denoting association with) + tūn ‘farmstead’, ‘settlement’. The place in Kent is named from Old English cyne- ‘royal’ + tūn.