Sources

1) Source: Chancery Miscellanea "Partition of the lands and fees of the Earl Marshal between Maud, Countess of Warenne, John de Monte Caniso, the Earl of Gloucester, the heirs of William de Ferrers and the heirs of William de Braose and of the dower of Eleanor, wife of Simon de Montfortbetween the same co-heirs". Dated: 1274. External Link
https://discovery.nationalarchives.gov.uk/details/r/C5907640. Reference: C 47/9/20 (Data from direct source)
2) Source: Special Collections: Ancient Correspondence of the Chancery and the Exchequer "Nicholas, abbot of Vaudey, to Ralph de Neville: a meeting with Llywelyn ab Iowerth; arrangements for a meeting near Ellesmere, Shropshire; the death of William fitz Reynold de Braose; letters from Llywelyn; the bishop of Chester's advice is required." Dated: cMay 18 1230. External Link
https://discovery.nationalarchives.gov.uk/details/r/C12205887. Reference: SC 1/6/155 (Data from secondary evidence)
3) Source: Ancient funerall monuments within the vnited monarchie of Great Britaine, Ireland, and the islands adiacent "Sir Richard Brews, and Dame Alice his wife- Sir John Brews, and Dame Eve his wife- Sir John Brews, and Dame Agnes his wife... Sir Nicholas Weyland, and Dame Beatrix his wife.". Reference: Pages 752-753; "The Foundation of the Priory of St Mary of Woodbridge"
4) Source: Special Collections: Ancient Correspondence of the Chancery and the Exchequer "William de Warenne, earl of Surrey to Hubert de Burgh, justiciar: the justiciar will be glad to hear that the countess of Eu, the earl's niece, and the justiciar's cousin, has arrived in England". Dated: c Aug 1219. External Link
https://discovery.nationalarchives.gov.uk/details/r/C9159957. Reference: SC 1/1/215 (Data from secondary evidence)
5) Source: MISCELLANEOUS COPIES of RECORDS FROM VARIOUS SOURCES "Mandate by Edw. I. to Geoffrey De Jenevile, justiciary of Ireland, (as former mandates had not been executed by James De Aldithe and Maurice FitzMaurice, late justiciaries,) to deliver the castle of Legh, with the third part of the possessions late of Maurice FitzGerald, deceased, in the barony of Offaly, to Roger De Mortimer and Matilda his wife, notwithstanding the King's grant to Thomas De Clare of the custody of said barony, as the King has learned by the record of Robert De Ufford, formerly Lieutenant in Ireland, and by the assertion of others, that FitzGerald held said barony of said Roger and Matilda, William De Cantelupe and Eva his wife, and Humphrey De Bohun and Eleanor his wife, daughters of Eva De Brewes, fifth heir of Walter and Anselm, the Marshals, by the service of 12 knights' fees, which were equally divided among the three sisters".. External Link
https://discovery.nationalarchives.gov.uk/details/r/0f6398dc-5d08-44ed-ba34-6efdc3181c10. Reference: MS 608, f. 29 (Data from direct source)
6) Source: English Baronies: a Study of Their Origin and Descent, 1086-1327. Reference: Pages 6-9: Barony of Miles of Gloucester (Questionable reliability of evidence)
7) Source: Chancery: Inquisitions Post Mortem, Series I, Edward I "Roger de Mortuo Mari (Mortimer), the elder...Edmund his son, aged 30 and more, is his next heir...Milverton. Two parts of the manor (extent given) held of the inheritance of Maud his wife of the king in chief by the service of two parts of ½ virgate land."Dated: 5 November 1282. External Link
http://www.british-history.ac.uk/inquis-post-mortem/vol2/pp263-270 (Data from secondary evidence)
8) Source: Chancery: Inquisitions Post Mortem, Series I, Henry III "Humphrey de Boun...Humphrey, son of the said Humphrey and Eleanor his wife, aged 18½, is heir (of the said Eleanor)."Dated: 1267 Evidences that Eleanor is mother of Humphrey.. External Link
https://www.british-history.ac.uk/inquis-post-mortem/vol1/pp203-208. Reference: C 132/34/8 (Data from direct source)