Her relationships with her mother and son are shown in the inheritance given here:
"...[John de Mowbray, 3rd Duke of Norfolk's] titles then became extinct, but were revived, in part, in favour of Edward IV's second son Richard, who became Duke of York and of Norfolk, Earl Marshal, Earl Warenne, and Earl of Nottingham. To support his new dignities he was married to the heiress Anne Mowbray 'to the grete honoure of her and of her blode' and it was agreed that he should inherit her possessions even if she died without issue. (fn. 125) Meanwhile, Anne's widowed mother, Elizabeth, Duchess of Norfolk, in view of her daughter's marriage, was induced to surrender the lands of the barony held by her in dower, and to accept instead other manors in Sussex and elsewhere. (fn. 126)
Anne died in 1481; (fn. 127) her husband was murdered in the Tower in 1483. (fn. 128) There was no direct heir to this half of the barony and so it was divided among the next of kin, the four surviving heirs of the other daughters of Elizabeth Fitzalan. (fn. 129) These were John Howard (created Earl Marshal and Duke of Norfolk, 28 June 1483), son of Margaret Mowbray; William, Lord Berkeley (created Earl of Nottingham, 28 June 1483), son of Isabel Mowbray; Sir Thomas Stanley (created Earl of Derby, 27 Oct. 1485), son of Joan Goushill, Elizabeth Fitzalan's daughter by her third husband Sir Robert Goushill; Sir John Wingfield, grandson of Elizabeth Goushill."
