HENRY OF SCOTLAND
ADA de WARENNE
WILLIAM I OF SCOTLAND
ISABEL OF SCOTLAND
Robert de BRUS
ROBERT de ROS
Zij is getrouwd met Robert de BRUS.in het jaar 1183 te Annandale, Dumfriesshire, Scotland, zij was toen 18 jaar oud.
Zij is getrouwd met ROBERT de ROS.in het jaar 1191 te Haddington, Lincolnshire, zij was toen 26 jaar oud.
Isabella mac William (born c. 1165) was the illegitimate daughter of William the Lion King of Scots by a daughter of Robert Avenel. She married Robert III de Brus in 1183. They had no children. After his death in 1191, Isabella was married to Robert de Ros, Baron Ros of Wark (died 1227). They had the following children:
Sir William de Ros (b. before 1200 - d. ca. 1264/1265), father of Robert de Ros, 1st Baron de Ros. and Sir William de Roos of Helmsley, Yorkshire (whose daughter, Ivette de Roos, married Sir Geoffrey le Scrope, K.B. of Masham, Yorkshire.
Sir Robert de Ros (ca. 1223 - 13 May 1285), was Chief Justice of the Kings Bench. He married Christian Bertram.
Sir Alexander de Ros (d. ca. 1306), who fathered one child, William, with an unknown wife.
Peter de Ros.
Douglas Richardson, Kimball G. Everingham. Magna Carta ancestry: a study in colonial and medieval families, Genealogical Publishing Company, 2005. pg 699. Google eBook
Douglas Richardson, , Kimball G. Everingham, (2011). Magna Carta ancestry : a study in colonial and medieval families, Volume II (2nd ed.). Salt Lake City, UT.: Douglas Richardson. p. 198..