The court case involving Sewal son of William de Spineto, cited in previous posts, https://books.google.com/books?id=lzZnAAAAMAAJ&pg=PA293 (Michaelmas 1218) and continued in the same book https://books.google.com/books?id=lzZnAAAAMAAJ&pg=PA298 (Hilary 1219) is from the Plea Rolls of the Exchequer of the Jews and is translated here: https://books.google.com/books?id=40xAAAAAYAAJ&pg=PA6&dq=Spineto and https://books.google.com/books?id=40xAAAAAYAAJ&pg=PA14&dq=Spineto Plea Rolls of the Exchequer of the Jews Pleas of Michaelmas Term, 3 Hen. III [A.D. 1218] ... Essex. Samuel, son of Aaron of Colchester, demands of Sewal de Spineto, son of William de Spineto, 50s. by chirograph under the names of the said Aaron and William. Defence, that the seal of the chirograph is not William's, in evidence whereof is produced a charter bearing William's seal, which is unlike the seal of the chirograph. As the the chirograph, Samuel puts himself upon lawful Christians and Jews, who know the handwriting of the clerk who was chirographer when it was made, and avers that it is usual for knights to have two seals. Pledges: for Sewal, Osbert, the chaplin; for Samuel, Benedict Crespin. Day assigned, the quindene of St. Hilary. Hillary Term, [A.D. 1219] ... Essex. Sewal de Spineto complains that Samuel, son of Aaron of Colchester, demands of him a debt which he does not acknowledge to be due. Wherefore mandate is to go to the Sheriff, that, having taken security from Sewal for the prosecution of his claim, he summon the said Jew to be before the Justices at Westminster on the morrow of All Souls to show how and by what warrant he demands that debt, and to have there that whereby he demands it. Pledges for prosecution, Osbert, chaplain, of Holland, and Robert, smith, of Cochester.