Worldwide, Mankeyev (Mankeyev , Манкеев ) is an extremely rare unknown gender first name. Much more frequently, Mankeyev is the last name as well as the forename.
Манкеєв, and Манькеев
Abay, and Mukhtar
, Манкеев 
) is an extremely rare unknown gender first name. Much more frequently, Mankeyev is the last name as well as the forename.