The preceding document has been cited nearly in Dugdale’s own words, because at the same time that it affords much information with respect to the retinue by which Segrave was attended to the field, it proves that he was intimately connected with the Earl Marshal, which tends to explain his having in the same year, namely, on the 12th August, 25th Edward I. 1297, been appointed by the Earl to appear in his name before the King, in obedience to a precept directed to him and the Constable, commanding them to attend him on the subject of a body of armed men which had assembled in London. The record states, that on the appointed day, the Earl of Hereford as Constable, and “Mons^r John de Segrave, qui excusa le Comte Mareschal par maladie,” came accordingly.[104] In the 25th Edward I., this baron was also summoned to accompany the King beyond the sea, and afterwards at Newcastle-upon-Tyne, with horse and arms; and, in the next year, was present when the English army gained the victory of Falkirk. In the 28th Edward I., he was again summoned to serve in the wars of Scotland, in which year, when he must have been about forty-five years old, he was at the siege of Carlaverock. The account given of him by the poet, that he performed the Earl Marshal’s duties upon that occasion, because that nobleman was prevented from attending, is not only strongly corroborated by the preceding statement of his having acted as deputy of the Earl Marshal in the year 1297, but also by the following extract from Peter de Langtoft’s chronicle (p. 309.), when speaking of the expedition into Scotland in 1300. “After Midesomers tide thorgh comon ordinance, No lenger suld thei bide, bot forth & stand to chance. Norreis & Surreis, that seruice auht the kyng, With hors & harneis at Carlele mad samnyng. The erle Marschalle Rogere no hele that tyme mot haue, He went with his banere Sir Jon the Segraue, To do alle tho service that longed the office tille, & mayntend alle the prise, ther he sauh lawe & skille.” After Carlaverock castle surrendered, Segrave’s banner, from his having acted as Marshal during the siege, was displayed on its battlements. In the 30th of Edward I., he was a party to the Letter from the Barons to the Pope, in which he is styled “John Lord of Segrave;” and about that time was appointed Governor of Berwick, and Warden of Scotland. In the same year, whilst riding out of Berwick with a small escort, he was surprised by an ambuscade of the Scots, wounded, and taken prisoner; which event is thus noticed by Langtoft (p. 319.) “Our men in Scotland with sautes sodeynly, The Segrave myght not stand, Sir Jon tok the gayn stie. His sonne & his brother of bedde als thei woke, & sextene knyghtes other, the Scottis alle them toke.”