Research Notes:
Brydges, in a revision of Collins, states, [1]
The first from whom we can, with any certainty, deduce the genealogy of this noble family is William de Bredenhill, a person of considerable note, and large possessions (in the reigns of Henry III. and Edward I.) who was seated at Dodington [Deddington?] in Oxfordshire, held lands there, and in Adderbury and Bloxham, in the said county; as also in Aynho and Sibbertoft in the county of Northampton. On June I9th, 1291, being outlawed, he had the King's pardon, by these denominations, William de Brudenell, alias William de Bredenhill, alias William de Brodenhull, alias William de Bredenhill. He left a son, Edmund, who married Alice, daughter of Roger Draper, of Dodington.
Collins states that William who had "two sons, Henry, or (as others vouch) Sir Hugh Brudenell, of Dodington, and Richard Brudenell, of Aynho." [2]
The pedigree in Wake, based on the the Brudenell family documents, does not include Edmund and shows William's sons as Richard and Henry. [3]
The Brudenell pedigree in the visitation of Northamptonshire, attributed to Thomas, Lord Brudenell, and dated 1645, does include Edmund. "William Brudenell of Dodington and Adderbury, co. Oxon, and Aynho, co. Northampton, temp. H. 3 and E. 1" father of "Edmund Brudenell, Lord of the above named lands" married to "Alice" (no surname). [4]
[1] Egerton Brydges, Collins's Peerage of England, genealogical, biographical, and historical, Vol. 3 (London: F. C. and J. Rivington, 1812), 487, [GoogleBooks].
[2] Arthur Collins, The Peerage of England: Containing a Genealogical and Historical Account of all the Peers of England, Third Edition, Vol. 2 (London: W. Innys and J. Richardson, 1756), 380, [HathiTrust].
[3] Joan Wake, The Brudenells of Deene, Second edition (London: Cassell and Company Ltd., 1954), 484.
[4] Walter Charles Metcalfe, The visitations of Northamptonshire made in 1564 and 1618-19: with Northamptonshire pedigrees from various Harleian mss (London: Mitchell and Hughes, 1887), 168-171, [GoogleBooks].