Cognomen เดือนใจ (เดือนใจ , Duanjai ) , in the world, is an extremely rare last name. Much more frequently, เดือนใจ is the forename as well as the last name.
Duandjai
คชาชัย, and วรรณบวร
, Duanjai 
) , in the world, is an extremely rare last name. Much more frequently, เดือนใจ is the forename as well as the last name.