Brockhaus-1911: Down · Stewart [3] · Stewart [2] · Stewart
Eisler-1912: Stewart, Dugald · Dugald Stewart · Chamberlain, Houston Stewart
Meyers-1905: Swan-down · Down · Broken-down · Stewart · Newton Stewart
Pagel-1901: Langdon-Down, John Langdon Haydon · Stewart, Sir Thomas Grainger
Pataky-1898: Stewart, Agnes M.
Pierer-1857: Swans down · Down · Stewart's Inseln · Stewart [2] · High Stewart · Stewart [1]