Cognomen バートル (Bartle 
, バートル 
, Erdeni 
) , in all the world, is quite a rare family name. The surname バートル is characteristic of Isle of Man, where it is quite a rare surname, the United Kingdom, and Botswana. In absolute terms, it is commonest in the United States, the United Kingdom, and Australia. Much less frequently, バートル is the forename as well as the last name.