Sources

1) Source: Special Collections: Ancient Petitions "Aline de Mountbray (Mowbray), widow of John de Mowbray, daughter and one of the heirs of William de Brewes (Braose); John de Bohoun (Bohun) of Midhurst, kinsman and heir of William de Brewes (Braose)"Dated: 1327. External Link
http://discovery.nationalarchives.gov.uk/details/r/C9209997. Reference: SC 8/157/7805 (Data from direct source)
2) Source: Chancery: Inquisitions Post Mortem, Series I, Henry IV "Thomas Moubray (Mowbray), earl Marshal...John Moubray, his brother and heir...He held the manors of Bosham and Stoughton in fee tail by the grant of Edward II to Thomas de Brotherton, his brother, of the lands of Roger le Bygod, sometime earl of Norfolk and Marshal [CChR 1300–26, pp.205–6]. They descended to Margaret duchess of Norfolk as daughter and heir of Thomas, from her to Thomas de Moubray, duke of Norfolk, as son of Elizabeth, daughter of Margaret, and so to Thomas as son of Thomas Moubray, and now to John Moubray as brother and heir...to William de Brewosa, senior, with remainder to John de Moubray and Aline his wife and their heirs. From them they descended to John their son, John his son, to Thomas duke of Norfolk, his son and heir, to Thomas the Earl Marshal, and now to John his brother...7 messuages and 10 bovates in Epworth, Haxey, and Owston in the Isle of Axholme, which John Lord Moubray, son of John, son of Roger"Dated: 1407. External Link
https://www.british-history.ac.uk/inquis-post-mortem/vol19/pp101-120. Reference: C 137/62/76 (Data from secondary evidence)
3) Source: Special Collections: Ancient Petitions "Petitioners: Aline de Mounbray (Mowbray), widow of John de Mowbray.""People mentioned: William de Brewosa (Braose); Earl of Hereford; John de Mounbray (Mowbray), late husband of the petitioner; Hugh le Despenser, the son; Lady de Burgh; John de Mounbray (Mowbray), son of the petitioner.". External Link
http://discovery.nationalarchives.gov.uk/details/r/C9294497. Reference: ha (Data from direct source)