ZwaanDutch Means "swan" in Dutch. Could be a nickname for a person who resembled a swan in some way, an occupational name for a swan keeper, or a patronymic derived from a given name containing the element swan... [more]
ZwackPolish Comes from the Polish name "Czwak." Possible German roots as well.
ZwagermanDutch Possibly a compound of Dutch zwager "brother-in-law" and man "man, person".
ZwartDutch Means "black, dark, swarthy" in Dutch, a nickname for someone with dark hair or skin.
ŻywickiPolish A habitational name that was given to someone from a place named ̣Zywy, or possibly from a nickname from the Polish word ̣'zywy', which means ‘live wire’.