Family
 John de Lacy, 2nd Earl of Lincoln (jure uxoris), Constable of ChesterBorn ± 1192 Died 22 Jul 1240, approximately 48 years Married before 1230 1) (at least 10 years married) to:  Margaret de Quincy, 2nd Earl of LincolnDaughter of Robert de Quincy and Hawise of Chester. Born ± 1206 Died Mar 1265/66, approximately 59 years Notes: Co-heir to Saer de Quincy, her grandfather. Child: 1. Maud de Lacy 2) 3)Born 25 Jan 1222/23 Died between 1287 and 10 Mar 1288/89, approximately 66 years | |||
Sources
1) Source: Duchy of Lancaster: Deeds, Series L "John de Lascy, Constable of Chester, and Margaret his wife to Roger de Quency: Conveyance by final concord of the inheritance of Saer de Quency, late Earl of Winchester"Dated: 1229-1230. External Linkhttp://discovery.nationalarchives.gov.uk/details/r/C5687422. Reference: DL 25/2336
2) Source: Chancery: Inquisitions Post Mortem, Series I, Edward I "Joan, late wife of Gilbert de Clare, sometime earl of Gloucester and Hertford, the king's daughter...Gilbert de Clare, aged 17 on 11 May last, is next heir of the said earl and Joan...She died 19 April, 35 Edw. I...wherein the said Joan was not conjoined, for Alice de la March, sometime the wife of the said Gilbert, held (it) by his demise...Maud de Clare, sometime countess of Gloucester, in her widowhood procured...the same descended to the heirs of the said Gilbert and Joan by the said Jordan’s death, as heirs of the said Maud"Dated: 1307 Tentative evidence that Maud is mother of Gilbert de Clare.. External Link
https://www.british-history.ac.uk/inquis-post-mortem/vol4/pp311-331. Reference: C 133/128/1, C 133/129/1, C 133/130/1 (Data from secondary evidence)
3) Source: Chancery: Inquisitions Post Mortem, Series I, Henry III "Richard de Clare, earl of Gloucester and Hertford...to the said keepers, dated 8 July, the king has granted to Gilbert de Clare, son and heir of Richard de Clare sometime earl of Gloucester, all the fruits of this autumn, viz.—of the 47th year of his reign, of all the lands, &c. which were his father's, for which he is to account at the king's exchequer, saving to William de Valencia, the king's brother,"Dated: 1262 Evidence that Maud is mother of Gilbert.. External Link
https://www.british-history.ac.uk/inquis-post-mortem/vol1/pp149-165. Reference: C 132/27/5 (Data from direct source)