Robert died on Jun 5, 1118.1
Elizabeth (Isabel) de Vermandois1 was the daughter of Hugh Magnus II, Count of Vermandois and Valois, Duke of France ( -1102) and Adelaide (Aelis) de Vermandois (c. 1065-bef1123). She and Robert de Beaumont had the following children:
The Peerage. Custom Id: 102; online. Call Number: http://www.thepeerage.com.
Ancestral Roots of Certain American Colonists Who Came to America Before 1700. Custom Id: 103; ancestry.com.
The Royal Descents of 600 Immigrants to the American Colonies or the United States. Custom Id: 843; personal copy.