"Richard de Wever, son of Thomas, after the death of his brother-in-law Peter de Arderne, and his sister-in-law Christiana, wife of John Fitton of Bollin, who died without issue, succeeded to the estates of Peter de Arderne in right of Margaret his wife, in conjunction with whom, 41 Edw. III. he gave to Robert de Fulleshurst, the marriage of his son and heir Thomas de Wever [Harl. MSS. 2037. 194.], who married him to his daughter Isabella."
(Ormerod says the Cheshire pedigrees of Weever are so unreliable, it is not safe to add anything from them to the descent of Weever which he gives, which is based on deeds and inquisitions.)