today: they were simple not allowed to have these professions,
there were a lot marriages since then,
a lot of name changes during the imigration process,
people can change their religionat will (e.g. Liza Minelli)
e.g. my name is definitly Polish but I'm not Polish
other examples
Marechal MacMahon (French chiefcommander WWI)
von Baudissin: German General (actually a hacked up French name)
de Angelis: Austrian / German General
Rendulic: Austrian / German General
de Maiziere: German military and politics