Robert's proven ancestry is non-existence. There are indications that the lines were related in some fashion. But there are various opinions about how they are related. The line set out for Robert's brother Hervey, based on Moriarty, has Robert in it as an elder brother, but states that he dsp. The line with Robert as grandfather of Ranulph is based on R. Mortimer, "The Family of Rannulf de Glanville", 'Bulletin of the Institute of Historical Research' LIV (1981) 1-16. I have put them together, assuming that Robert did not "dsp".
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My apoligies for the length of the following & I pray that this relates to the same individual:
Robert de Glanville, Feudal Lord of Bromholm, etc. (vi. A in Pedigree), was at the survey enfeoffed of several Lordships of the Honour of Eye in Suffolk. The following are the Extracts from "Domesday Book" relating to him:
"SUFFOLK: HUNDRED OF STOW.- Robert de Glanville holds Crating of Robert Malet, which Leuin, a freeman of Edric, the predecessor of Robert Malet, held in commendation. There is one carucate of land in the soke of the King and the Earl. There were always 6 bordars, and there was then one plough and a half, afterwards 1/2 a plough, and now two ploughs in demesne. There was then half a plough belonging to the men, 3 acres of meadow, and the 4th part of a mill. There were then 2 horses, now there are none. Now there are 4 steers, 14 hogs, and 43 sheep, and 6 freemen of the same. Leuin holds in commendation 12 1/2 acres. There was always 1/2 a plough among all, and there is a soke man of the same Edric of [i.e., holding] 28 acres. There was always 1/2 a plough. Then and afterwards the whole was worth 20 shillings; it is now worth 30 shillings." (D. B., pp. 304, 304b.)
"BOSEMERE HUNDRED.- In Crating is one freeman who, in the time of King Edward, was under the protection of Edric. There are 20 acres and 2 bordars; and there was then 1/2 a plough; now 1 ox, and 1 acre of meadow, and it is worth 3 shillings and 4 pence. Walter of Caen holds it. In the same is 1 freeman, and 1 1/2 acres, who was the man of a certain client of Edric's, and it is worth 2 shillings, and Robert de Glanville holds it." (D. B., p. 304b.)
"PLUMESGAT HUNDRED.- . . . . . In Gliemham is a freeman of Almicin(?). There are 15 acres, and they are worth 2 shillings. Robert de Glanville holds it. The soke is the Abbot's." (D. B., p. 308b)
"PLUMESGAT HUNDRED.- . . . . . In Benhal 4 freemen hold 8 acres in commendation, and they are worth 16 pence. They are in demesne. The soke is the Abbot's. In the same I freeman holds in commendation 1 acre and 1/2, and it is worth 6d. Robert de Glanville holds it. The soke is the Abbot's." (D. B., p. 309.)
"HUNDRED OF CARLEFORD.- . . . . . In Burch, Robert de Glanville holds one freeman, Wlunin, the Priest, who was under the protection of Edric, in the time of King Edward. There are 6 acres, and they are worth 12 pence; and 11 acres of freeland, and they are worth 11 pence." (D. B p. 315b.)
"HUNDRED OF PLUMESGAT.- Baldeseie (?) a berauite (barton) of Holeslea, which Robert de Glanville holds of R. Malet, 1 carucate of land. There were always 3 bordars. Then there was 1 plough and 1/2, now there are two. Then, it was worth 25 shillings, now it is worth 40 shillings, and it is one mile in length and 5 furlongs in breadth; and it returns 27 pence for gelt. In the same ville 17 freemen, under the protection of E[dric], held 60 acres of land in the time of King Edward. There were then 3 ploughs, now l 1/2, and 4 acres of meadow. It was then worth 10 shillings, it is now worth 12. In How, 1 freeman for the 4th part of 1 acre worth 2 pence." (D. B., p. 317b.)
"HUNDRED OF WILEFORD.- . . . . . In Alretun there were 31 freemen in the time of King Edward, now 34, under the protection of Edric, of these Godric, the predecessor of Swain, had the protection of 2 1/2, but W. Malet has been seised thereof, There is 1 carucate of land and 80 a