Name of an Anglo-Norman baronial house, derived from Montbray (Manche) in Normandy south of St. Lo. It was founded at the Conquest by Geoffrey (de Montbray), bishop of Coutances. His brothers son Robert, who rebelled with him against William Rufus on the Conquerors death, was made, after their reconciliation, earl of Northumberland, as his uncles heir but was forfeited and imprisoned for life on rebelling again in 1095. A sister of Bishop Geoffrey was mother by Roger dAubigny (of Aubigny in the Cotentin) of two sons, Nigel and William, who were ardent supporters of Henry I., and were rewarded by him with great estates in England. William was made kings butler, and was father of William dAubigny (de Albini), first earl of Arundel (see Arundel); Nigel was rewarded with the escheated fief of Geoffrey de la Guerche, of which Melton (Mowbray) was the head, and with forfeited lands in Yorkshire. Nigel married, by dispensation, the wife of his cousin, the imprisoned earl, but afterwards divorced her, and by another wife was father of a son Roger, who took the name of Mowbray.
Roger, a great lord with a hundred knights fees, was captured with King Stephen at the battle of Lincoln, joined the rebellion against Henry II. (1173), founded abbeys, and went on crusade. His grandson William, a leader in the rising against King John, was one of the twenty-five barons of the Great Charter, as was his brother Roger, and was captured fighting against Henry III. at the rout of Lincoln (1217). His grandson Roger (12661298), who was summoned to parliament by Edward I., was father of John (12861322), a warrior and warden of the Scottish March, who, joining in Thomas of Lancasters revolt, was captured at Boroughbridge and hanged. His wife, a Braose heiress, added Gower in South Wales and the Bramber lordship in Sussex to the great possessions of his house. Their son John (d. 1361) was father, by a daughter of Henry, earl of Lancaster, of John, Lord Mowbray (c. 13281368), whose fortunate alliance with the heiress of Lord Segrave, by the heiress of Edward I.s son Thomas, earl of Norfolk and marshal of England, crowned the fortunes of his race. In addition to a vast accession to their lands, the earldom of Nottingham and the marshalship of England were bestowed on them by Richard II., and the dukedom of Norfolk followed (see Thomas Mowbray, 1st duke of Norfolk).
The 1st duke left two sons, of whom Thomas the elder was only recognized as earl marshal. Beheaded for joining in Scropes conspiracy against Henry IV. (1405), he was succeeded by his brother John, who was restored to the dukedom of Norfolk in 1424. His son John, the third duke, was father of John, 4th and last duke, who was created earl of Warrenne and Surrey in his fathers lifetime (1451). At his death (1475) his vast inheritance devolved on his only child Anne, who was married as an infant to Edward IV.s younger son Richard (created duke of Norfolk and earl of Nottingham and Warrenne), but died in 1481.
The next heirs of the Mowbrays were then the Howards and the Berkeleys, representing the two daughters of the first duke. Between them were divided the estates of the house, the Mowbray dukedom of Norfolk and earldom of Surrey being also revived for the Howards (1483), and the earldom of Nottingham (1483) and earl marshalship (1485) for the Berkeleys. Both families assumed the baronies of Mowbray and Segrave, but Henry Howard was summoned in his fathers lifetime (1640) as Lord Mowbray, which was deemed a recognition of the Howards right; their co-heirs, from 1777, were the Lords Stourton and the Lords Petre, and in 1878 Lord Stourton was summoned as Lord Mowbray and Segrave. The former dignity is claimed as the premier barony, though De Ros ranks before it. Lord Stourtons son claimed, but unsuccessfully, in 19011906 the earldom of Norfolk (1312), also through the Mowbrays. Of the Mowbray estates the castle and lordship of Bramber is still vested in the dukes of Norfolk. The heraldic badge of the house was a mulberry-tree.