Last name ברטרם (Bertram 
, Bartram , ברטרם 
) , in the entire world, is a common family name. The last name ברטרם is habitual in Jersey, where it is quite a common surname, Guernsey, and Germany (explore the name in all countries). In absolute terms, it is the most numerous in Germany, the United States, and the United Kingdom. Also, ברטרם is the forename as well as the last name.