Worldwide, Esterkine (Esterkine , Эстеркин ) is an extremely rare unknown gender given name. Much more frequently, Esterkine is the last name as well as the forename.
Естеркин, and Эстэркин
Jakov
, Эстеркин 
) is an extremely rare unknown gender given name. Much more frequently, Esterkine is the last name as well as the forename.