Robert married Katherine,Patent RollsUFFORD, ROBERT DE, first Baron of Suffolk of his house (1298 - 1369). Dictionary of National Biography, Ubaldini - Whewell (Vol 20), p. 13.; accessed via ancestry.com paid subscription site, January 2019. sister and co-heir of William de Ufford, 2nd Earl of Suffolk, by whom he had three sons and two daughters:
