Worldwide, Фаенсон (Фаенсон , Faenson ) is an extremely rare unknown gender first name. Much more frequently, Фаенсон is the last name as well as the forename.
Fayenson
Марк, Алина, Софья, Марина, Михаил, Андрей, Залман, Леонид, Эллина, Евгений, Владимир, Вячеслав, and Александр
, Faenson 
) is an extremely rare unknown gender first name. Much more frequently, Фаенсон is the last name as well as the forename.