https://en.wikipedia.org/wiki/Hugh_Bigod,_3rd_Earl_of_Norfolk

HUGH Bigod, son of ROGER Bigod Earl of Norfolk & his wife Ida --- . “Rogerus Bigot comes Norfolchiæ” donated property to Colne priory, for the souls of “Hugone Bigot fratris mei et comitissæ Julianæ matris meæ et Idæ uxoris meæ”, by undated charter, witnessed by “Hugone Bigot filio meo…”[1008]. He succeeded his father in 1221 as Earl of Norfolk. The Annals of Dunstable record that “Hugo Bigot comes” died in 1225[1009]. The Annals of Waverley record the death in 1225 of “Hugo Bigot comes Norfolchiæ”[1010].

m as her first husband, MATILDA Marshal of Pembroke, daughter of WILLIAM Marshal Earl of Pembroke & his wife Isabel Ctss of Pembroke . The Chronicle of Tintern Abbey, Monmouthshire, names ”Matilda…Johanna…Isabella” as the daughters of “Willielmi Marescalli comitis Penbrochiæ”, adding that Matilda married “Hugoni le Bigod comiti Norfolke et Suffolke” and secondly “Johanni de Garrene comiti de Surrey”[1011]. Her birth date is estimated from the birth of her first child in [1212/13]. Henry III King of England granted letters of conduct to "Matildis uxor Hugonis Bygod" dated 7 Sep 1217[1012]. The Annals of Dunstable record that “Hugo Bigot comes…uxor” married “comiti Warenniæ”[1013]. She married secondly as his second wife, William [IV] de Warenne Earl of Surrey.

Earl Hugh & his wife had [four] children:

1. [ISABEL . The sources which report the parentage of the wife of Gilbert de Lacy are conflicting. A manuscript which narrates the descents of the founders of Lanthony Abbey records that “Gilbertus de Lacy” married “Isabellæ Mareschal”[1014], presumably confusing her with Isabel daughter of William Marshal Earl of Pembroke who married firstly Gilbert de Clare Earl of Gloucester and Hereford and secondly Richard Earl of Cornwall. The Chronicle of Tintern Abbey, Monmouthshire names "Isabella soror Johannis" as daughter of ”Rogerus sive Radulphus Bigod, secundus filius Hugonis le Bigod com. Norfolke et Suffolke…” and his wife “Bertam de Fornivale”, adding that she married firstly "Gilberto de Lacy" and secondly "Johanni Fitz-Geffrey"[1015]. This must also be incorrect, as any children of Ralph Bigod could not have been born before the late 1220s at the earliest, which is inconsistent with the timing of Isabel’s first marriage. If Isabel was a member of the Bigod family, she must have been the daughter of Hugh and Matilda Marshal of Pembroke. This is the solution adopted by the Complete Peerage[1016], although the primary source on which this is based has not yet been identified. m firstly GILBERT de Lacy, of Ewyas Lacy, Herefordshire, son of WALTER de Lacy Lord of Meath & his wife --- . m secondly JOHN FitzGeoffrey, son of GEOFFREY FitzPiers Earl of Essex & his second wife Aveline de Clare . Justiciar of Ireland.] http://fmg.ac/Projects/MedLands/ENGLISH%20NOBILITY...igodNorfolkdied1225A

GILBERT de Lacy of Ewyas Lacy, Herefordshire . The Chronicle of Tintern Abbey, Monmouthshire records that "Gilbertus de Lacy" had a son "Hugonem" who had "filium Walterum", who in turn had "filium Gilbertum de Lacy"[892]. A manuscript which narrates the descents of the founders of Lanthony Abbey names “Gilbertus de Lacy” as son of “Walterus de Lacy” and his wife[893]. An undated charter of Henry III King of England confirmed a donation by ”Walterus de Lacy” to the Hospital of Ludlow, Shropshire, for the souls of “Margeriæ uxoris meæ…Gilberti de Lacy filii mei”[894]. The Annals of Tewkesbury record the death in 1230 of “Gilebertus de Lacy filius et hæres Walteri de Lacy” and his burial “apud Lantone in Wallia”[895]. The Annals of Worcester record the death in 1230 of “Gilbertus de Lacy”[896]. m as her first husband, ISABEL, daughter of [HUGH Bigod Earl of Norfolk & his wife Maud Marshal of Pembroke] .

Gilbert & his wife had three children:

a) WALTER de Lacy . The Chronicle of Tintern Abbey, Monmouthshire names "Walterus de Lacy" as the son "Gilberto de Lacy" and his wife, adding that he died young[900]. His paternal grandfather recognised Walter as his heir 15 May 1238[901].

b) MARGERY de Lacy . The Chronicle of Tintern Abbey, Monmouthshire names "Margeria et Matilda" as the daughters and co-heiresses of "Gilberto de Lacy" and his wife, adding that Margery married "Johanni de Verdon" [902]. A manuscript which narrates the descents of the founders of Lanthony Abbey names “Margeria, uxor Johannis de Verdon” as daughter and heiress of “Gilbertus de Lacy”, son of “Walterus de Lacy”, and also lists their descendants[903]. A charter dated 14 May 1244 restored to "John de Verdun and Margaret his wife, granddaughter and one of the heirs of Walter de Lascy, and to Peter de Geneve and Matilda his wife, granddaughter and another of Walter´s heirs, all the lands in Meath whereof Walter was seised at his death"[904]. m as his first wife, JOHN de Verdun, son of THEOBALD Butler [Le Botiller] & his second wife Rohese de Verdun of Alton, Staffordshire .

c) MATILDA de Lacy . The Chronicle of Tintern Abbey, Monmouthshire names "Margeria et Matilda" as the daughters and co-heiresses of "Gilberto de Lacy" and his wife, adding that Matilda married "Gaufrido de Genyvile" [905]. A manuscript which narrates the descents of the founders of Lanthony Abbey names “Matildis” as second daughter and heiress of “Gilbertus de Lacy”, son of “Walterus de Lacy”, adding that she married “Galfridi de Geneville”, and also lists their descendants[906]. A charter dated 19 Feb 1244 relates to the inheritance of "W. de Lacy in…comitatu [Hereford]" by "Matillidi uxori Petri de Geneva, neptem et unicam heredem predicti Waltheri" and "sorori ipsius Matillidis"[907]. A charter dated 14 May 1244 restored to "John de Verdun and Margaret his wife, granddaughter and one of the heirs of Walter de Lascy, and to Peter de Geneve and Matilda his wife, granddaughter and another of Walter´s heirs, all the lands in Meath whereof Walter was seised at his death"[908]. Her first marriage is confirmed by Matthew of Paris who names "Matildam elegantem filiam Walteri de Lasey in Hybernia" as wife of "Petrus de Geneure natione Provincialis…" when recording her husband's death in 1249[909]. Henry III King of England granted "Geoffroy de Joinville et Mahaut de Lacy sa femme" rights in the land of Meath held by "Gautier de Lacy, grand-père de Mahaut" by charter dated 8 Aug 1252[910]. “Gaufridus de Genvyle dominus de Vaucolour miles et Matildis de Lacy filia Gileberti Lacy uxor eius” donated property to Dore Abbey by undated charter, witnessed by “Johanne de Vaucolour milite…”[911]. m firstly PIERRE de Genève, son of HUMBERT Comte de Genève & his wife --- . m secondly GEOFFROY de Joinville Seigneur de Vaucouleurs, son of SIMON Seigneur de Joinville & his second wife Beatrix d'Auxonne [Bourgogne-Comté] . http://fmg.ac/Projects/MedLands/IRELAND.htm#GilbertLacydied1230

Sir Hugh Bigod [f], Earl of Norfolk, Magna Carta Surety, b abt 1182, Thetford, Norfolk, England, d sh bef 18 Feb 1224/25, England. He md Maud Marshal 1207, Pembrokeshire, Wales, daughter of Sir William Marshal, Earl of Pembroke, Mareschal of England, and Isabel de Clare.

Children of Hugh Bigod and Maud Marshal were:

Roger Bigod, Earl of Norfolk, b abt 1209, Thetford, Norfolk, England, d 3 Jul 1270; md Isabella of Scotland May 1225, Alnwick, Northumberland, England.
Isabel Bigod b abt 1212, Thetford, Norfolk, England, d 1250. She md:
[1] Gilbert de Lacy abt 1225, son of Sir Walter de Lacy, Lord of Meath and Weobley, and Margaret/Margery de Braose; and

[2] Sir John Fitz Geoffrey, Justiciar of Ireland, abt 1235, son of Sir Geoffrey Fitz Piers, Earl of Essex, and Aveline de Clare.

Sir Hugh Bigod, Chief Justice of England, b abt 1215, d Nov 1266; md [1] Joanna Burnet abt 1232, [2] Joan de Stuteville bef 5 Feb 1243/44, daughter of Sir Nicholas de Stuteville and Devorguilla of Galloway.
? Sir Simon Bigod, Knight, b abt 1218, Thetford, Norfolk, England, d bef 1242.

John FitzGeoffrey, Lord of Shere and Justiciar of Ireland . He was the son of Geoffrey Fitz Peter, 1st Earl of Essex and Aveline de Clare, daughter of Roger de Clare, 3rd Earl of Hertford & his wife Maud de Saint-Hilaire. He was Justiciar of Ireland. He was not entitled to succeed his half-brother as Earl of Essex in 1227, the Earldom having devolved from his father's first wife. He was the second husband of Isabel Bigod, daughter of Hugh Bigod, 3rd Earl of Norfolk, a Magna Carta surety, and Maud Marshal. They had six children, one being Maud who married William de Beauchamp, 9th Earl of Warwick Note: The males took the FitzJohn surname . John FitzJohn of Shere . m Margary, daughter of Philip Basset of Wycombe . Richard FitzJohn of Shere . Lord FitzJohn 1290. m as her first husband, Emma . Maud FitzJohn . Married firstly to Gerard de Furnivalle, Lord of Hallamshire . Married secondly to William de Beauchamp, 9th Earl of Warwick, son of William de Beauchamp of Elmley, Worcestershire & his wife Isabel Mauduit. Had issue. Isabel m Robert de Vespont, Lord of Westmoreland . Had issue. Aveline m Walter de Burgh, Earl of Ulster . Had issue, ncluding Richard Og de Burgh, 2nd Earl of Ulster who in turn married Margaret de Burgh, by whom he had ten children. Joan m Theobald le Botiller of Thurles, Nenagh . Had issue, from whom descend the Butler Earls of Ormond