Family name Martellus (Martel 
, Martil 
, Martelo ) , in all the world, is a common surname. The family name Martellus is habitual in Guernsey, where it is a common surname, Canada, where it is quite a common surname, and Peru (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in France, Canada, and Peru. Much less frequently, Martellus is the forename as well as the last name.