Mac Steafáin
Mac STEAFÁIN, Mac STEIMHIN, Mac STIABHNA, Mac STIAMHNA, Mac STIBHIN, Mac STÍN, Mac STIOFÁIN, Mac STIOPHÁIN—V—M'Stephen, M'Stephin, M'Steyny, M'Stine, MacSteen, Fitzstephen, Fitzstephens, Stephenson, Stevenson, Stevinson, Stenson, Steenson, Steinson, Stinson, Steveson, Stephens, Stevens, &c.; 'son of Stephen.'
Alphabetical Index to Irish Surnames