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Richard de Reviers Seigneur de Reviers, de Vernon et de Néhou
Adelise Peverel
(Between 1075/1080-After 1156)
Baldwin de Reviers 1st Earl of Devon
(Between 1090/1100-1155)
(-Bef 1155)
William de Vernon 5th Earl of Devon
(Abt 1140-Between 1217)


Family Links

1. Mabile de Meulan

William de Vernon 5th Earl of Devon 1

  • Born: Abt 1140 2
  • Marriage (1): Mabile de Meulan
  • Died: Between 8 and 10 Sep 1217 1 2
  • BuriedMale: Twynham (later Christchurch), Dorset, BH23, GB

  General Notes:

WILLIAM de Vernon (-8 or 10 Sep 1217, bur Christ Church, Twynham). The Fundationis et Fundatorum Historiaof Forde Abbey names "Ricardum, Henricum et Willielmum" as the three sons of "comes Baldwinus". "Adeliz de Redveris" donated property to the abbey of Loders, Dorset, for the souls of "patris mei…Willelmi Pevrel de Notingeham…et matris mee Adeline", with the consent of "…nepotum meorum Ricardi de Reveris, Henrici atque Willelmi", by undated charter. "Baldewinus comes Devoniĉ" donated property to Exeter St James, with the consent of "Ricardo filio meo", by undated charter witnessed by "…duobus filiis meis Willielmo et Henrico". "…Baldwino et Ricardo nepotibus meis, Willelmo de Vernun…"witnessed the charter dated to [1163/75] by which "Reginaldus, Henrici Regis filius, comes Cornubiĉ" granted property to "Willielmo de Boterell, filio Aliziĉ Corbet, materterĉ meĉ". He succeeded his nephew in [1193] as Earl of Devon, Lord of the Isle of Wight. "Willielmus de Vernon comes Devoniĉ et filius comitis Baldewini" donated property to Quarr Abbey, for the souls of "patris mei comitis Baldewini et matris meĉ Adeliciĉ comitissĉ et fratris mei comitis Ricardi et uxoris meĉ Mabiliĉ comitissĉ", by undated charter. The Obituary of Lyre records the death 8 Sep of "Willelmus comes". The necrology of Mont-Bourg records the death "17 Sep" of "Guillelmus de Reveriis secundus". Henry III King of England notified "W. Briwerrjuniori" of the death of "W. comes de Insula" and requested him to take custody of "castrum de Carebroc" until a decision about its custodianship dated [Sep] 1217.

m ([1178/86]) MABILE de Meulan, daughter of ROBERT de Beaumont Comte de Meulan & his wife Matilda of Cornwall ([1166/72]-after 1 May 1204). Her marriage date is estimated from the marriage date of her daughter Mary. Thomas Stapleton, in his "Observations on the Great Rolls of the Exchequer of Normandy", records that Robert Comte de Meulan devised his lands in Normandy and England "ex toto to Mabiria wife of William Earl of the Isle and to have them confirmed to [her], as to his next heir [tanquam heredi meo propinquiori]", by charter dated 1 May 1204 "copied into the cartulary of Beaulieu in the forest of Préaux near Rouen", witnessed by "John de Préaux, William de Préaux…". The Fundationis et Fundatorum Historia of Forde Abbey names "Mabilia comitissa" as the wife of "Willielmum de Vernona". "Willielmus de Vernon comes Devoniĉ et filius comitis Baldewini" donated property to Quarr Abbey, for the souls of "…et uxoris meĉ Mabiliĉ comitissĉ",by undated charter.

Earl William & his wife had three children: Mary, Joan and Baldwin.

[FMG/Medieval Lands]


William de Reviers or de Vernon, 5th Earl of Devon of the 1141 creation and Lord of the Isle of Wight.

[Burkes' Peerage]

Note the difference between the 5th & 6th Earl (cited below in Dormant & Extinct Peerages) is that Burke's Peerage does not recognize that Richard Seigneur de Reviers was made the Earl of Devon and, even if he was made an Earl of Devon, the Earldom was created anew in 1141 by the Empress Maud, when she made Baldwin the 1st Earl of Devon of the 1141 creation.



WILLIAM (DE REVIERS], called DE VERNON, EARL OF DEVON, LORD OF THE ISLE OF WIGHT, uncle and heir, being 3rd but only surviving son of Baldwin, the 1st Earl. He took part in Richard's second Coronation, 17 April 1194, being one of the four Earls who bore the Canopy. He was a consistent supporter of King John.

He married Mabirie, or Mabel, daughter of Robert DE DUNSTANVILLE, 1st COUNT OF MEULAN of that family, by Maud, daughter and coheir of Reynold DE DUNSTANVILLE, EARL OF CORNWALL. She was living 1 May 1204. He died 8 or 10 September 1217, and was buried in Christ Church, Twynham [some say, at Tiverton].

[Complete Peerage IV:315-6, XIV:259, (transcribed by Dave Utzinger)]


William de Redvers, surnamed Vernon, 6th Earl of Devon. This nobleman, upon the second coronation of King Richard I, was one of the four earls that carried the silken canopy, then being styled "Earl of the Isle of Wight." His lordship appears to have adhered steadily to King John, for we find that monarch in the 18th of his reign [1217-18] providing for the security of the earl's property against Louis of France, which, from his advanced age, he was unable to defend himself. He m. Mable, dau. of Robert, Earl of Mellent, by whom he acquired a considerable accession to his landed possessions, and had issue, Baldwin, Joan, and Mary. William, 6th Earl of Devon, d. 14 September, 1216, and was s. by his grandson, Baldwin de Redvers, 7th Earl of Devon.

[Sir Bernard Burke, Dormant and Extinct Peerages, Burke's Peerage, London, 1883, p. 140, Courtenay, Barons Courtenay, Earls of Devon]

William married Mabile de Meulan, daughter of Robert de Beaumont Comte de Meulan and Matilda of Cornwall. (Mabile de Meulan was born between 1166 and 1172 and died after 1 May 1204 1 2.)


1 George Edward Cokayne, "Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom" (Sutton Publishing Ltd., 2000), IV:315-6.

2 Frederick Lewis Weis, Walter Lee Sheppard, David Faris, <i>Ancestral Roots of Certain American Colonists Who Came to America Before 1700: The Lineage of Alfred the Great, Charlemagne, Malcolm of Scotland, Robert the Strong, and Some of Their Descendants</i> (Genealogical Publishing Co., Inc., 1992), 50-27.

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