later, by patent of the 24th May, the same envoys were commissioned to treat for a marriage between the eldest son of the King of Aragon and Beatrice the King's daughter. It is probable that this latter commission was only to be acted upon in the event of their failing to come to an agreement with the King of Castile. It appears that they could not come to terms with him on this occasion, but on the 8th of February, 1253-4, Maunsell was again despatched to Spain, with Peter (de Egeblanke), Bishop of Hereford, as his colleague, to treat for peace with the said Alphonso, King of Castile and Leon, and by these two envoys a treaty was signed on the Kalends of April, 1254, wherein the preliminaries of a marriage were arranged between Prince Edward and Eleanor of Castile, the King's sister. Maunsell afterwards accompanied Prince Edward into Spain, and was present at his marriage, which took place at Burgos, towards the end of October.
In the autumn of the following year, 1255, Maunsell was sent to Edinburgh, with Richard, Earl of Clare, to inquire into the treatment of Princess Margaret.
In January, 1256, he was made Treasurer of York, an office which he retained till his death.
- Rymer's Fœdera, vol. i. p. 290.
- Rymer's Fœdera, vol. i. p. 295.
- At this period Maunsell occurs frequently as witness to the principal Charters of King Hen. III. Amongst others, he was witness to the Charter of 14th February, 1254, by which the King gave to Prince Edward the whole land of Ireland (except the towns and counties of Dublin and Limerick and the town of "Dalon," which the King retained in his own hands, 50 librates of waste land which he had assigned to his half-brother Geoffrey de Lusignan, and 40 librates of waste land which he had promised to Robert Walerand), the county of Chester, with its castles, towns, &c., his conquests in Wales, viz.: Rotheland (Rhuddlan) Dissard (or Disserth) and Gannoc, with all the other lands of Pernechelac, the town and castle of Bristol, the castles of Montgomery, Carmarthen and Cardigan, with their appurtenances, the castle of Buelt (Builth), Peake Castle (in Derbyshire), Stamford, and Grantham, with the honor, Jersey, Guernsey, and the other isles of the sea, and the manor of "Frigido Mansello,"—Rym. Fœd., vol. i. p. 297.
- Annales de Burton.
- Annales de Dunstaplia; Rym. Fœd., vol. i. p. 925.