Many noble families are descended from the Royal line. Stewarts have held or hold the Dukedoms of Albany, Rothesay and Lennox, the Marquessate of Bute, and the Earldoms of Menteith, Angus, Atholl, Strathearn, Carrick, Buchan and Galloway.
Among other Stewart families were those of Bonkil, Blackhall and Greenock, Castlemilk, Balquidder, Achnacone, Ardsheal, Ardvorlich, Dalguise, Fasnacloich, Grandtully and Invernahyle.
[From: Robert Bain in "The Clans and Tartans of Scotland"]
Septs of Clan Stewart of Galloway
Septs of Clan Stewart of Garth
Tartans of Clan Stewart