My great grandfather came over from the Russia/Lithuania area in the 1870's, as Joseph Kusselewsky. In the 1890's he changed his name to Kassel. In his name-change papers he said some other members of his family had already changed to Kassel. We've never known of other family members. We do know his father's name was Chaim.
Does any other Kassel have the name Kusselewsky (or something like it) in their history?