Hi Saba,
Here is a rather rough and ready translation of the text. I can't figure out some of the place names and there are a few words which are not clear.
MS. Ashmole 804, pt. I, 17.
From the evidences of Lascelles of Sowerby
William son of John de Lascelles held lands in Brackenborough, Sowerby near Thirsk, Swainby, and Theakston which descended to him by hereditary right after the death of his father. His brother John held the peel-house of Northallerton with Goscelin Deiville, knight and other enemies of Edward formerly king of England, father of king Edward III, adherents of Gilbert de Middleton, traitor to that king who took his lands into the king's hand. By his charter dated 35 Edward III [1361], the lands were restored to William his [John's] son.
[See Calendar of Patent Rolls, Edward III, vol. 11: 1358-1361 (1911), 555.]
Charter of William Lascelles senior of Pickering, given at Allerthorpe, 6 Henry IV [1404-5].
Fine dated 11th year of king Edward son of king Henry [1283], between William de Lascelles junior and Wiliam de Lascelles senior of the manors of Sowerby and Brackenborough. Remainder to Thomas de Lascelles, brother of William de Lacelles junior, if he dies without heirs of his body, remainder to Isabel sister of Thomas.
[See Feet of Fines: CP 25/1/267/61, number 31 (YARS, cxxi, 66)]
William de Lascelles of Brackenborough grants to Thomas de St. Quintin and Margaret his wife, lands in the vill of Thornton. If the aforesaid Thomas dies without heirs of his body, remainder to Joan, daughter of Stephen de Swynnerton, if she dies without heirs of the body, remainder to Thomas, son of the aforesaid William de Lascelles. Given at North Ottringham 30 Edward III [1356].
[This one is a genealogical puzzle]
William de Lascelles of Sowerby without date. John son of William de Lascelles of Sowerby grants to William de Lascelles lord of Sowerby ?? in lands which came from the aforesaid William his father in the vills of Sowerby, Catterton?, Brackenbury, Theakston, Baynton, Malton and Allerthorpe. Given 1 Edward son of king Henry [1272-3].
[This one is a puzzle]
Robert Danby one of the king's justices of the common bench, Guy Roucliffe, William Burgh, and Richard Burgh, gentlemen give to Robert Lascelles son of John Lascelles, gentleman and Catherine wife of the same Robert, all lands etc. which came from William Lascelles father of the aforesaid John in Allerthorpe. Given 37 Henry VI [1458-9]
1236, Agreement between William de Lascelles son of Ralph de Lascelles and John the prior and the convent of Newburgh over the case discussed between them in the king's court concerning the marshes of Tranemire?
William son of William Talvas of Thirsk confirms to John de Lascelles, knight a messuage and two bovates of land in Storneby? Given A.D. 1324.
I, Andrew de Lascelles give to William de Lascelles, my son the lands that I have in the territory of ???. Witnessed by William de Lascelles of Rounton (Rungeton) and others. Given A.D. 1262.
Sir John de Barton, knight and Lucy his wife custodians of part of the lands of John de Lascelles, son and heir of William de Lascelles deceased, assign to Margaret who was the wife of the said William de Lascelles, as the reasonable dower of the said Margaret, all lands which were of William her husband in Sowerby and Brackenborough. Given at Sowerby 33 Edward I [1304-5].
Ralph de Lascelles ?? to William de Lascelles his lord and brother, a bovate of land he has by the gift of William de Lascelles his brother in the vill of Brackenborough. Without date.
We, John de Barton, Guy de Roucliffe and ?? de Moulton grant to William Lascelles junior and Elizabeth his wife, all of our manor of Brackenborough. If he dies without heir of his body, remainder to the right heirs of William Lascelles senior. Given at Brackenborough, 10 Henry 4 [1408-9].
Regards,
John