Sybil de Neufmarché

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Sybil de Neufmarché

Also Known As: "Neufmarche", "Sibyl", "Countess of Hereford", "Lady of Brecknock"
Birthdate: (47)
Birthplace: Brecon Castle, Brecon, Wales
Death: Died in Gloucester, England
Place of Burial: Llanthony Priory, Wales
Immediate Family:

Daughter of Bernard de Neufmarche, Lord of Brecon and Nesta, of Hereford
Wife of Miles FitzWalter of Gloucester, 1st Earl of Hereford, Lord of Brecknock
Mother of Roger FitzMiles, 2d Earl of Hereford; Margaret de Hereford; Henry Fitzmiles, Baron Abergavenny; Walter Fitzmiles de Hereford, Sheriff of Hereford & Gloucester; Bertha de Hereford and 3 others
Sister of Mahel de Neufmarché; Adam de Neufmarché; Ivo de Neufmarché and William de Neufmarché

Occupation: burial Llanthony Priory, Gloucester, England, Countess of Hereford
Managed by: James Fred Patin, Jr.
Last Updated:

About Sybil de Neufmarché

Sybil de Neufmarché was sole heiress of Bernard de Newmarch.

Sybil was our ancestor through three distinct descent lines--through her daughter Bertha, through her daughter Lucia, and through her daughter Margaret, each of whom was independently our ancestor.

See "My Lines"

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from Compiler: R. B. Stewart, Evans, GA

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Geoffrey de Neufmarche b abt 1045. He md Ada de Heugleville abt 1066, daughter of Richard de Heugleville and Ada. She was b abt 1052.

Child of Geoffrey de Neufmarche and Ada de Heugleville was:

Bernard de Neufmarche, Lord of Brecon, b abt 1074, d 1125. He md Nesta abt 1095, daughter of Osborn Fitz Richard and Nesta verch Gruffydd.

Child of Bernard de Neufmarche and Nesta was:

Sibyl de Neufmarche b abt 1104, Aberhonwy, Wales, d aft 1143, Gloucestershire, England. She md Sir Miles Fitz Walter, Earl of Hereford, Constable, abt May 1121, son of Walter Fitz Roger of Gloucester, Constable of Gloucester Castle, and Berthe.

Sole heiress of her father.
Sole heiress of her father. First name aka 'Sybyl'.
Sybile De Neufmarche was born c. 1100 in Brecon Castle, Brecon, Wales to Bernard De Neufmarche, Lord of Brecon and Nest ferch Osbern De Neufmarche. Sybile married Miles de Gloucester, 1st Earl of Herford in the spring of 1121 and had 8 children: Margaret of Hereford; Roger Fitzmiles, 2nd Earl of Hereford; Walter de Hereford; Henry Fitzmiles; Mahel de Hereford; William de Hereford; Bertha of Hereford; and Lucy of Hereford. She passed away AFTER 1143 in Llanthony Secunda Priory, Glocester, England and is buried in Llanthony Secunda Priory, Glocester, England.

NOTE: See link:


Sybile de Neufmarche de Gloucester is my 29th great grandmother.

Sibyl de Neufmarché, Countess of Hereford, suo jure Lady of Brecknock (c. 1100 – after 1143), was a Cambro-Norman noblewoman, heiress to one of the most substantial fiefs in the Welsh Marches. The great-granddaughter of Gruffydd ap Llywelyn, king of Wales, Sibyl was also connected to the nobility of England and Normandy. Sibyl inherited the titles and lands of her father, Bernard de Neufmarché, Lord of Brecon, after her mother, Nest ferch Osbern, had declared her brother Mahel to have been illegitimate. Most of these estates passed to Sibyl's husband, Miles de Gloucester, 1st Earl of Hereford, as her dowry. Their marriage had been arranged personally by King Henry I of England in the spring of 1121

By the time of his death around 1125, Bernard (Sibyl's father) had established a flourishing borough around his castle of Brecon. Henry I had married Bernard's daughter Sibyl to Miles Fitz Walter, the High Sheriff of Gloucestershire, in 1121 and passed a significant portion of Bernard's honour to him as a dowry, including Hay-on-Wye Castle.

According to Giraldus Cambrensis this was because Mahel de Neufmarché the son and heir of Bernard had mutilated the paramour of his mother. In vengeance his mother, Nesta, swore to King Henry I that her son was illegitimate. Henry was therefore able by law and custom to pass over Mahel and give the land to his friend and confident Miles Fitz Walter with Bernard's legal heiress in marriage.

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Sybil de Neufmarché's Timeline

Brecon, Wales
Age 22
Gloucester, Gloucester, England
Age 30
Gloucester, Gloucestershire, England
Age 32
Gloucester, Gloucestershire, England
Age 33
Gloucester, Gloucestershire, England
Age 34
Gloucester, Gloucestershire, England, United Kingdom
Age 36
Gloucester, Gloucestershire, England
Age 40
December 24, 1143
Age 47
Gloucester, England