A merchant of the staple, Aldstaynmore rose to be one of the wealthiest men in late medieval York. His origins, beyond his mother’s name, are obscure, but in 1411-12 both he and his brother, Thomas (d.1435), entered the freedom of the city by redemption. Both were described as merchants.
Aldstaynmore soon became involved in civic government and in February 1418 he was chosen as one of the chamberlains. It was this in this capacity that, in April, he witnessed an arbitration settlement of an accusation of slander made before the mayor.
In September 1429 Aldstaynmore was once again elected as one of the MPs for York. Once more, the concerns of the Calais staple may have been foremost in the minds of the York electors, as they returned John Bolton*, another stapler, alongside Aldstaynmore. The Parliament which assembled at Westminster on 22 Sept. was notable not only for the series of petitions which resulted in the so-called Partition and Ordinance of the Staple (which concerned the use of foreign currency in Calais in an attempt to regulate the bullion supply), but also for a long discussion over the internal government of the company of the staple, which resulted in the election of John Reynwell* as mayor of the staple for three years. The importance of this business to York’s mercantile elite may explain why the city’s electors returned two men both of whom had previous parliamentary experience, a unique occurrence during Henry VI’s reign.
In his commercial dealings, as well as his career of office holding, Aldstaynmore interacted closely with some of York’s leading citizens. His marriage to Agnes Thoresby was perhaps the best example of the importance of such connexions, providing him with an entrée into the governing elite: while John held civic office within six years of entering the freedom, his brother, Thomas, had to wait nearly 20 before being chosen as one of the chamberlains in February 1432. By kinship and trade Aldstaynmore was related to the families of Blackburn, Bolton, Gare, Gascoigne, Holbeck, Kirkeby, Louth and Ormshead.
Aldstaynmore made his will on 28 Jan. 1435. He asked to be buried beside his wife in the choir of his parish church of St. John the Evangelist by Ouse Bridge. Agnes had made her will on the previous 7 Dec. and probate had been granted to her husband on 2 Jan. 1435. It is possible that both were victims of the plague then prevalent in the city.
Probate was granted on 18 Feb. 1435, but it was not long before his family and executors began to quarrel. Thomas Aldstaynmore followed his brother to the grave within a short time, effectively leaving the execution of John’s will in the hands of Holbeck and Stocton.
