Invited to Scotland by King David I in 1141. Became High Steward. Founded Paisley Abbey. Philip B. Stewart gives his surname as "Fitz Alan." (letter from Philip B. Stewart, 6 Sabal Ct., Sewall's Pt., Stuart, Fl., 4/24/1990). He was the son of an Anglo-Norman baron (Bain, Robert. The clans & tartans of Scotland. Glasgow : Fontana/Collins, c1976. 5th edition). In 1160 founded the monastry at Paisley, for monks of the Clunic order, from the convent of Wenlock in his native Salop (WWW site: Directory of royal genealogy).
Steward of Malcolm IV of Scotland. The surname of the royal house of Stuart probably dates from the reign of Malcolm IV, and the person of Walter, since in the prior reign of David I he had been witness to two charters without the designation of Steward (The concise dictionary of national biography. Part 1 : from the beginnings till 1900. London : Oxford University Press, 1969, pg. 1251).
Granted the Barony of Renfrew (Severance, B. Frank. Genealogy and biography of the descendants of Walter Stewart of Scotland and of John Stewart who came to America in 1718 and settled in Londonderry, N.H. Greenfield, Mass. : T. Morey & Son, 1905, pg 1).