Stevan

Also Breton: https://br.wikipedia.org/wiki/Stefan --- mention Stevan
http://bibliotheque.idbe-bzh.org/data/cle_122/Choix_de_PrAnoms_bretons_.pdf
http://www.meilleursprenoms.com/stats/prenoms_stat.php/Stevan

In 2018, 57 is the most common age for an American (U.S.) Stevan who is registered male with the Social Security Administration. It is the 3, 856th most common male first name for living U.S. citizens.