General Notes

HUGH D'AVRANCHES, EARL OF CHESTER
The Conqueror and His Companions
by J.R. PlanchÈ, Somerset Herald. London: Tinsley Brothers, 1874.

Rongwald, like the majority of his countrymen and kinsmen, had several children by a favourite slave, whom he had married "more Danico," and Hrolf Turstain, the son of one of them [I have Hrollaug Rognvaldson as father of Hrolf], having followed his uncle Rollo into Normandy, managed to secure the hand of Gerlotte de Blois, daughter of Thibaut Count of Blois and Chartres, which seems to have been the foundation of this branch of the great Norse family in Normandy, and the stock from which descended the Lords of Briquebec, of Bec-Crispin, of Montfort-sur-Risle, and others who figure as companions of the Conqueror.