In the entire world, Калмус (Калмус , D'Ora , Kallmus) is an extremely rare unknown gender forename. Much more frequently, Калмус is the last name as well as the forename.
Kalmous, and Kalmus
, D'Ora 
, Kallmus) is an extremely rare unknown gender forename. Much more frequently, Калмус is the last name as well as the forename.