William The Lion - Marriage and Issue

Marriage and Issue

Due to the terms of the Treaty of Falaise, Henry II had the right to choose William's bride. As a result, William married Ermengarde de Beaumont, a Great-granddaughter of King Henry I of England, at Woodstock Palace in 1186. Edinburgh Castle was her dowry. The marriage was not very successful, and it was many years before she bore him an heir. William and Ermengarde's children were:

1. Margaret (1193–1259), married Hubert de Burgh, 1st Earl of Kent.
2. Isabel (1195–1253), married Roger Bigod, 4th Earl of Norfolk.
3. Alexander II of Scotland (1198–1249).
4. Marjorie (1200–17 November 1244), married Gilbert Marshal, 4th Earl of Pembroke.

Out of wedlock, William I had numerous children, their descendants being among those who would lay claim to the Scottish crown.

By Avice de Avenel, daughter of Robert Avenel, Justiciar of Lothian:

1. Isabel Mac William (Isibéal nic Uilliam) (born ca. 1170), married firstly in 1183 Robert III de Brus (died ca. 1191) and married secondly Sir Robert de Ros, of Helmsley (died 1226)

By an unnamed daughter of Adam de Hythus:

1. Magaret, married Eustace de Vesci Lord of Alnwick

By unknown mothers:

1. Robert de London
2. Henry de Galightly, father of Patrick Galightly one of the competitors to the crown in 1291
3. Ada (died 1200), married Patrick I, Earl of Dunbar (1152–1232)
4. Aufrica, married William de Say, and whose grandson Roger de Mandeville was one of the competitors to the crown in 1291