Marton was the son of a York dyer who had purchased the freedom of the city in 1393-4. He himself was admitted by patrimony in 1427-8. In March 1429 he performed his first recorded duty as a freeman, when he sat on a jury at an inquisition post mortem.
The later MP, who by 1440 was renting property in Castlegate from the wardens of Ouse Bridge, had by 1444 joined the York Mercers’ Company.
Little evidence survives of Marton’s career during the 1450s. He continued to serve as a member of the council of 24 throughout the decade (being recorded as present at council meetings in September 1455 and April 1457), but by 3 Feb. 1459 he had been elevated to the ranks of the aldermen.
Marton’s personal affairs are similarly obscure. His involvement in the mercery trade appears to have been restricted to domestic commerce. In Hilary term 1445 he sued the Scarborough merchant William Helperby* for a debt of 100s. in the court of common pleas, and in November 1448 he was one of four men who were bound by recognizances of £20 each that the York mercer Robert Collynson should satisfy the King of the customs due on lead seized at Newcastle-upon-Tyne by the searcher of ships there.
Marton made his will on 13 June 1463. He asked to be buried in his parish church of St. Andrew, York, providing for his funeral there according to local custom. He left 21 marks for masses to be sung on the anniversary of his death for three years, and made further bequests to the clergy of the Minster, the mendicant orders and the guild of St. Christopher. He also gave 6s. 8d. for the fabric of the church of Holy Saviour, York, and 12d. to Knaresborough priory. His widow, Margaret, received certain jewels and £20 in cash, while his brother, William, a chaplain, was given a gradual. The testator’s only son, also called William, received a robe, while gifts of cash and clothing were made to several named servants. After these bequests had been made and his debts settled, the remainder of his estate was to be disposed of at the discretion of his widow for the benefit of his soul. Margaret, the merchant John Ince, and John Shirwood, clerk, were entrusted with the execution of his will and probate was granted on 18 Aug. that year.
