In all the world, Tetyushkin (Tetyushkin , Тетюшкин ) is an extremely rare unknown gender given name. Much more frequently, Tetyushkin is the last name as well as the forename.
Тетюшкін
Alexey
, Тетюшкин 
) is an extremely rare unknown gender given name. Much more frequently, Tetyushkin is the last name as well as the forename.