The Annales Cambriæ record that "Ricardus de Clare" married "M filiam J de Laci comitis Lincolniæ" in 1238. The Annals of Tewkesbury record the marriage “circa Purificationem beatæ Virginis” of “filia comitis Lincolniæ” and “Ricardo de Clare”. The Annales Londonienses record the marriage in 1238 of "Ricardum de Clare filium comitis Gloverniæ" and "Matildæ filiæ comitis Lincolniæ". The Chronica de Fundatoribus et Fundatione of Tewkesbury Abbey records the marriage of “Ricardus de Clare secundus filius et hæres…Gilberti et Isabellæ” and “Matildem…filiam comitis Lincolniæ”. 1
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Transcript of writ to the barons of the exchequer, 4 Feb., 47 Hen. III. [1262/3], to cause M[aud] countess of Gloucester to receive £33 20d., which the king has assigned to her in dower, out of the issues of the earldom of Hertford, late of Richard de Clare, her husband. 2
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8 Jul 1263, Westminster
Grant to William de Valencia the king's brother, in part payment of the king's debts to him, that he may keep for himself, out of the
fruits of this instant autumn of the lands late of R. de Clare, earl of
Gloucester, which the king caused to be cultivated at his own expense,
and likewise out of the issues of the manors of Rotherfeud, Blescingleve,
Berdefeud, Subiry, Desening, Lakinkchithe, Walsingham, Welles,
Warham, Wiston and Bissele arising on this side of St. Giles, £500
by reasonable appraisement, saving to the king the residue of the said
fruits, and to Maud late the wife of the said earl the fruits in the
manors of Deseninge, Walsingham, Welles and Warham, which she
caused to be cultivated at her own cost, before the assignment of her
dower. And if it happen that Gilbert de Clare, son and heir of the
said earl, should not prove his age at the feast of St. Giles, whereby
the wardship of his inheritance should belong to the king for the following year, the king grants to the said William that land to the value
of £500 a year in the first mentioned manors remain to him for
another year from St. Giles if the king owe him so much, and if the
king be not bound to him in so much, the excess shall remain to the
king. And if the said fruits and issues and any part thereof by reason
of the disturbance of the realm, be devastated or carried away so that
he cannot collect and have them, the king wills that such default
be allowed in his debt...
Calendar of the Patent Rolls, Hen. III, vol. 5, p. 268
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1 Sep 1266, Kenilworth
Protection and safe conduct until Easter for Maud de Clare, countess
of Gloucester and Hertford, coming to court.
Calendar of the Patent Rolls, Hen. III, vol. 5, p. 634
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25 Feb 1267, Cambridge
Safe conduct until Michaelmas for Maud de Clare, countess of
Gloucester and Hertford, coming to the king's court for her affairs.
26 Mar 1267, Cambridge
Although Gilbert de Clare, earl of Gloucester and Hertford, lately
impleaded Maud his mother before the king touching the castle of
Uske and certain lands in the March where the king's writs do not
run ; the king is unwilling that this be drawn into a precedent to
the prejudice of the earl or his heirs with respect to their liberties
there.
Calendar of the Patent Rolls, Hen. III, vol. 6, pp. 41, 49
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20 Aug 1285, Clarendon
Association of Hamo Hauteyn with R. Boyl[and] in a ... commission [of oyer and terminer], touching the persons who broke the park of Matilda de Clare, countess of Gloucester and Hertford, at Hoveden, co. Suffolk, hunted therein and carried away deer.
Calendar of the Patent Rolls, Edw. I, vol. 2, p. 211
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26 Sep 1287, Westminster
[Letters for] Matilda de Clare, countess of Gloucester, staying in England, nominating William de Inchynghefeld and Thomas Dunfert [her attorneys] for two years.
Calendar of the Patent Rolls, Edw. I, vol. 2, p. 277
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10 Mar 1289, Westminster
[To Master Henry de Bray, escheator this side Trent.] Order to deliver to G. de Clare, earl of Gloucester and Hertford all the lands he took into the king's hands by reason of the death of Maud, countess of Gloucester, of the lands that she held in dower of the earl's inheritance, together with the goods and chattels that he took into the king's hands of the goods and chattels found in the lands or of the issues of the same until a month from Easter next....
Calendar of the Close Rolls, Edw. I, vol. 3, p. 6