There is no reason to doubt that John was the son of Robert Sheriff, the mayor of Grimsby in 1441-2.
This mayoral election, which is probably to be dated to October 1465, was the most controversial episode of Sheriff’s documented career. According to a Chancery petition presented by the coroners, Hugh Edon* and John Cokke, he was prevented from taking office by the opposition of John Newport II*, who falsely claimed that it was he whom the burgesses had chosen. The coroners claimed that when they called Sheriff to take his oath of office he refused, partly because he was reluctant to undertake the responsibility but principally because he feared Newport. They concluded their petition by asking not only that Sheriff be ordered to appear before them to take his oath but that Newport and eight other burgesses, who had supported Newport, be summoned to appear in Chancery.
This long record of administrative involvement leaves no doubt that Sheriff was one of the principal Grimsby men of his day. Although little evidence survives of his commercial interests, these must have been substantial for, at least in the latter part of his career, he numbered among the merchants of the Calais staple. The Kingston-upon-Hull customs accounts of the late 1460s and early 1470s give some idea of the scale of his activities. For example, in 1466-7 he imported small quantities of wine, bitumen, iron, linen cloth, wainscots and pitch, and on 1 Sept. 1473 he exported from Hull 37½ sacks of wool and 2,463 woolfells.
Such trading activities were not, however, sufficient to make Sheriff a wealthy man other than in the context of the impoverished town of Grimsby. The modest bequests in his will, drawn up on 17 Aug. 1477, suggest that his resources were far from extensive. He left 6s. 8d. to the cathedral church of Lincoln, five marks to the church of St. James at Grimsby, 20s. to the chapel of the staple at Calais, and the same sum to the abbey of Humberstone which lay a few miles to the south of his native town. His wife was to have his principal house in Grimsby for her life with remainder to his eldest son, Robert. Although the latter was left the bulk of his lands, some small landed provision was also made for his other two sons and two daughters. This division of the inheritance may explain why his eldest son played a much less prominent part in borough politics than he had done. Our MP’s membership of the staple is reflected in his direction that he be buried in the church of St. Mary at Calais.
