Girl name origins & meanings Old English : Joyous Girl name variations Blythe Blithe Bliss Family name origins & meanings English : variant of Blythe.Irish : Americanized form of the Connacht name Ó Blighe ‘descendant of Blighe’, a personal name probably derived from the Old Norse byname Blígr (from blígja ‘to gaze’).Cornish : nickname from Cornish blyth ‘wolf’. Compare Blethen.