William’s father, a Canterbury weaver, was a prominent member of the city’s ruling elite in the first half of the fifteenth century, first serving as cofferer in 1414, acting as a jurat in 13 years between 1418 and 1450, and officiating as one of the bailiffs for six annual terms between 1431 and 1447.
Meanwhile, the future MP, always distinguished from his father in the records of Canterbury by the description ‘junior’, had been admitted to the freedom of the city by inheritance on 29 Sept. 1437.
In January 1442 Osbourne was elected to the first of three Parliaments. He received wages for 62 days attending at Westminster including time spent travelling to and from his home, and combined his duties as an MP with those as Canterbury’s attorney, receiving 6s. 8d. for distributing papers to counsel concerning a case in the Exchequer brought against William Benet.
The brevity of this Parliament was probably a welcome respite to Osbourne, whose interests and responsibilities elsewhere were increasing at this time. The nature of his contacts in London are hinted at by a recognizance made in December 1446 to him and Robert Miller, a London draper, by Thomas Markle for a debt of £14 8s.
Whether Osbourne ever held property in Canterbury is not known.
