Henry was the son and heir of Robert fitz Swein of Essex, who was favoured by Edward the Confessor and who built Rayleigh Castle some time after 1066, and a grandson of Swein, son of Robert FitzWimarc.
Henry was the son and heir of Robert fitz Swein of Essex, who was favoured by Edward the Confessor and who built Rayleigh Castle some time after 1066, and a grandson of Swein. Swein was son of Robert FitzWimarc.