William de Montagu (d. 1217)

✓ William de Montagu, brother and heir of Drew (d. s.p. 1167) and son of Richard de Montagu - 'possibly half-brother. William and his brother Richard appear to have been children at their father's death. This, combined with the way in which they are referred to by their mother, suggests they were probably the issue of a later marriage' (CP IX p.76 n.(a)); had livery of his inheritance 1178; confirmed his father's gifts to Bruton; attested charters of Richard Bishop of Winchester (1174-85) and of John, Count of Mortain (1191); 'after John's accession to the throne, became a prominent official at Court'; exchanged Sutton for Thorne 1198; custodian of Sherborne Castle and sheriff of Somerset and Dorset 1204-07; a justiciar 1208; 'He rebelled early in 1215, but appears to have submitted soon after the accession of Henry III. He m. Isabel, whose parentage is not known. He was living in Apr., but d. circa June 1217, when the custody of his lands and heir was granted to Alan Basset, from whom Isabel the widow received her dower.' Father of Drew. Mother Alice at ~ (CP 'probably'). Source: Complete Peerage 2nd ed. vol. IX (1936), 'Montagu' pp.75-82 and notes (article mainly by Ethel Stokes; page images supplied by Aynsley, read 27 Oct 2026). [DIRECT ANCESTOR OF THE COMPILER: flag added 27 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]