Details of the career of this MP are relatively easy to piece together, so long as they were concerned with his activities in or on behalf of the borough he represented in the Commons. At the county assizes held in 1413, Roger Pyjon† of Shaftesbury alleged that William Morton, a tailor by trade, had unlawfully dispossessed him of a messuage in the town’s parish of St. Lawrence. In his defence Morton claimed to be the tenant of the property under the terms of a lease granted by Pyjon’s aunt.
Whether Morton’s duties as the bailiff’s deputy had anything to do with these alleged trespasses cannot now be ascertained. Clearly, he was regarded highly enough in Shaftesbury as to be chosen by the burgesses as mayor at Michaelmas 1428 and elected as the borough’s representative in the Commons at the end of his term of office in the following year. Similarly, a second mayoralty, in 1434-5, was immediately followed by a second election to Parliament. Perhaps he was sent to Westminster for pragmatic reasons: so that he could combine the task of looking after the borough’s interests in the Commons with that of accounting at the Exchequer for the dues Shaftesbury owed to the Crown. A William Morton, presumably the same man, had attested the electoral indentures for Dorset’s knights of the shire who accompanied him to these same two Parliaments. He had also been one of the four burgesses of Shaftesbury named as party to the indentures recording the borough’s returns on two other occasions, in 1427 and 1432. Curiously, in 1437, when he was elected to Parliament for the third time, his name appeared among attestors not only on the county’s indenture but also on that recording his own return.
A measure of Morton’s standing in Shaftesbury in the 1430s may be derived from his service on juries summoned there not only to provide information at inquisitions post mortem on important members of the Dorset gentry,
During the Michaelmas term of 1435, while up at his second Parliament, Morton had joined the lawyer Robert Rempston* and William Catte* (both sometime MPs for Shaftesbury) in bringing a lawsuit against a local draper and two chaplains on a charge of conspiring to defraud them of certain tenements in the town.
What is difficult to resolve is the question of the relationship of the MP to the Mortons living at Milborne St. Andrew – situated between Shaftesbury and Dorchester – and more pertinently to his namesake William Morton ‘senior’ of Milborne, who held property in Durnelane in Dorchester from 1426 to 1431.
The lawyer fits into the pedigree of the Mortons of Milborne compiled by the Dorset antiquary, Hutchins, as uncle of the famous Cardinal John Morton (d.1500).
