Wido de St Maur, lord of the manor of St Maur, near Avranches, in Normandy, came to England 1066, and was deceased before 1086, when William FitzWido his son held a barony in Somerset, Wiltshire and Gloucester, and ten manors in Somersetshire from Geoffrey Bishop of Coutances. He made conquests in Wales c. 1090, which his family afterwards held. He had children:
Peter de St. Maur, who granted Portishead to the Hospitallers and was ancestor of the Lords St. Maur, barons by writ 1314, who bore Argent, two chevrons gules;
Richard FitzWilliam, who inherited the Welsh barony and tempore King Stephen granted four churches in Wales to Kidwelly Abbey. This marcher barony was re-conquered soon after by the Welsh. His son Thomas de St. Maur held three knight's. fees from Humphrey de Bohun in Wilts, and had issue Bartholomew, who witnessed the charter of Keynsham Abbey, c. 1170.
Other landholdings
The Somerset historian Collinson stated William FitzWido as the Domesday Book holder of the Somerset manor of Horsington in Somerset, and two vills namely Cheriton and Combe, the last of which was given by a member of his family to the Knights Templar who made of it a cell. William FitzWido also held the Gloucestershire manor of Dyrham. In the Church of St Lawrence at Rode no trace remain of the St Maur family, although in the eastern corner of the south aisle survives a deeply recessed wall tomb, inside which local tradition has it that the remains of one of the St Maur family was buried.
Descent
Ancestry
Milo de St Maur, who fought in the Barons' Wars during the reign of King John.
Geffrey de St Maur, who married the daughter and heiress of William de Rughdon.
Laurence de St Maur, of Rode, Somerset, who in 1282 had obtained from King Edward I a grant of a weekly market at Rode.
Barons by writ
Nicholas de St Maur, 1st Baron St Maur, son of Laurence de St Maur, of Rode. He engaged in King Edward I's expeditions into Scotland between 1298 and 1305. He was summoned to Parliament by King Edward II by writ in 1314, by which he is deemed to have become Baron St Maur. He married Elena la Zouche, the eldest daughter and co-heiress of Alan la Zouche, 1st Baron la Zouche of Ashby and North Molton.
Thomas de St Maur, 2nd Baron St Maur, eldest son, who died childless. He was never summoned to Parliament.
Nicholas de St Maur, 3rd Baron St Maur, younger brother. He fought in France during the reign of King Edward III in the retinue of Maurice de Berkeley and later in that of Thomas de Holand. He married Muriel Lovel, daughter of James Lovel, only son of Richard Lovel, 1st Baron Lovel of Cary, feudal baron of Castle Cary in Somerset. She was the heiress of Castle Cary and of Winfred Eagle in Dorset.
Nicholas de St Maur, 4th Baron St Maur, eldest son who died a minor.
Richard de St Maur, 5th Baron St Maur, younger brother. He fought in France in 1386 in the retinue of Richard FitzAlan, 10th Earl of Arundel, Admiral of England. He married Ela St Lo, daughter and co-heiress of Sir John St Lo.
Richard de St Maur, 6th Baron St Maur, eldest son, who died without any sons, leaving a daughter and sole-heiress to the barony :
