The subject of this biography was the elder son of a fairly prosperous Lincolnshire landowner who served on a few royal commissions during the early 1360s, but otherwise lived quietly at his home in Somerby. Robert is first mentioned in 1371, when he witnessed a local deed. Three years later he and his mother, Katherine, presented jointly to the chapel of Stain so we may assume that he had by then inherited the family estates which included the two manors of Stain and Theddlethorpe. In August 1374, a Robert Cumberworth took part in a vicious assault upon one of the coroners of Lincolnshire at Coningsby, but it is not entirely certain that he and the subject of this biography were one and the same person.
Comparatively little is known about this MP’s more personal activities, which, on the whole, give little cause for comment. In November 1385, he offered a bond worth £20 to the wealthy Lincoln merchant, Robert Sutton; and five years later he contributed towards the securities of £500 which Sir Edmund Pierrepont pledged as a guarantee of his future good behaviour during the course of a particularly acrimonious dispute with the authorities of Grimsby. He had by then become a man of some substance, his first return to Parliament, in 1393, being clearly made in recognition of this fact. Yet, although he obtained the keepership of the estates of the late John Beelsby in June 1394, he received no further marks of favour from Richard II. On the contrary, a lawsuit in which he was then engaged for the recovery of a debt of £20 had to be abandoned after the award of a royal pardon for outlawry to the defendant; and despite his appointment to the Lincolnshire bench in 1397, no specific rewards or additional offices came his way.
Robert Cumberworth drew up his will on 15 July 1404, and died within the following year. He wished to be buried at either Stain or Somerby, both benefices having long been in his gift. As well as making bequests worth over £34 in cash, he left a goblet ‘vocatum Westmeles’ to John Huntman, the chancellor of Lincoln cathedral, and a silver cup which had been given to him by his father-in-law, Sir William Ergum, to his daughter, Katherine. She had by then married Sir Robert Constable’s son and heir, Sir Marmaduke, and was the mother of four young sons. The task of executing the will fell, inter alios, to Cumberworth’s widow, Sibyl, his younger brother, John, and his only son, Thomas, who promptly took possession of his inheritance. Sibyl survived her husband for at least three more years, and made her will in the autumn of 1408.
