Eldest daughter and coheir, named in the Inquisition Post Mortem taken after her father's death, then aged "1 year on the eve of SS. Simon and Jude, 22 Edw. I."
Proof of Age
156. MARGARET THE WIFE OF ROBERT DE HARLE, AND DAUGHTER AND ONE OF THE HEIRS OF BRIAN DE BROMPTON.
Writ to the escheator to take the proof of age of the said Margaret, 2 Nov. 2 Edw. II. 
SALOP. Proof of age, Friday the feast of St. Nicholas, 2 Edw. II. (defective and defaced.)
Richard de Leyghton, aged 60, says that the said Margaret was 15 on the eve of SS. Simon and Jude last, and was born at Huggeford on that day, 21 Edw. I, and baptized on the morrow in the church of Stocton, and this he knows because on the said eve he took seisin of certain land in Cardeston which he bought of Robert Corbet, where it was announced that Maud the wife of the said Brian was delivered of the said Margaret.
William le Forcier (?), aged 50, says the same, and knows it because on the said eve in the same year he was with Sir William de Huggeford at Huggeford where the said Margaret was born, and if it had been a male, he would have lifted him from the font.
Payn de Preston, aged 60, says the same, and knows it because he had a daughter Denise who was born on the day of St. Michael preceding the said Margaret’s birth.
William Hoord, aged 50, says the same, and knows it because he was at a feast at Caws on the day of St. Nicholas after the said feast of SS. Simon and Jude, where the said Brian told him that the said Margaret was born on the said day.
Richard de Hodinet, aged 60, says the same, and knows it because on that day he came with Thomas Corbet, who lifted the said Margaret from the font.
William de Caynton, aged 50, says the same, and knows it because on the day the said Margaret was born he was at a feast at Boulewas, where news came to the said Brian that his wife was delivered of the said Margaret.
John de Beaumays, aged 50, says the same, and knows it because he had a son Roger born on the same day.
Walter Sprynghoes, aged 50, says the same, and knows it because he had a son Reginald, who died on the Thursday after the said Margaret’s birth, and at his burial her birth was (announced?) to him.
Hugh de Bolledon, aged 60, says the same, and knows it because he had a son who fled from his house with a greyhound to Huggeford on the said day, and did not return for two days.
Hugh Sturmy, aged 50, says the same, and knows it because he had a son John who was born three days before the birth of the said Margaret.
Geoffrey de Alleton, aged 60, says the same, and knows it because ……………. of Maud the said Margaret’s mother a month after her birth, and he was present.
Robert Broun, aged 50, says the same, and knows it because ………. in the last year he returned from the school of Cambridge, and when he came home it was intimated to him that the said Margaret ……….
C. Edw. II. File 13. (8.) 2
Margaret carried to her husband the manors of Brampton, Bucton, Ashton, etc., with the hamlet of Weston in the Marches of Wales, and also some lands in Kinslet.
In 21 Edw. III [1347/8], on the death of Beatrix, wife of Peter, Lord Corbet, of Caus, who died seised of the barony of Caus, the manors of Munsterley, Yokethul, Wentenouse, Shelve, Bynneweston, Foxton, Chelme, Over-Gother, Nether-Gother, and Baghetrese in com. Salop, it was found that, Thomas Corbet, ancestor of the said Peter, died seised of the said manors, and left a son Peter, and three daughters, Alice, Venice, and Emme; likewise, that the said Peter had issue, Peter, his son and heir, who married her the said Beatrix: and that the beforementioned Alice became the wife of Robert de Stafford, who had issue by her, Nicholas, his son and heir, and he Edmund, and he Ralph, then Lord Stafford..., and that Emme, the other sister, had issue, Walter de Bramton, her son and heir, and he Brian, who left two daughters, his co-heirs, Margaret, the wife of Sir Robert de Harley, and Elizabeth, wife of Edmund de Cornwal... 3 4
At that time [1347/8], Margaret wife of Robert de Harleye was aged 46 years and her sister Elizabeth 42 [these ages are out by 10 years; compare those given in the Inquisition Post Mortem taken on their father's death].
Inquisition Post Mortem
210. MARGARET, LATE THE WIFE OF ROBERT DE HARLEGH.
Writ, 30 June, 23 Edward III. 
SALOP, Brugge North, Tuesday the feast of the Translation of St. Thomas the Martyr, 23 Edward III.
Caus. She held no lands &c. of the king in chief in dower or for her life of the inheritance of Robert son and heir of the above Robert in the county, or of any other; but she held a fourth part of the manor of Caus, viz. Yokelton, Schelve and Wentenore (extents given), of her own inheritance, which manor is held of the king in chief by service of two knights' fees.
She died on Wednesday the feast of St. John the Baptist last. Robert, son of Robert de Harlegh, aged 28 years at the feast of the Annunciation last, is her heir.
C. Edw. III. File 96. (15.) 5