Originally from Yokefleet in the East Riding, the Jenisons acquired under the Tudors the manor of Walworth, county Durham, which was seized by the Crown for recusancy in 1608. The senior branch of the family played little part in local affairs thereafter, although in 1610 they unsuccessfully tabled a private bill in the Commons for partition of their estates.
Jenison, who should not be confused with a cousin of the same name who died in 1634, inherited his father’s business shortly before taking up his freedom as a merchant adventurer, and was an alderman by 1597, when he was dispatched to York to frustrate attempts to overturn the lessees’ monopoly of the coal trade. In response his enemies had him summoned before the Durham High Commission for recusancy, where he angrily protested his conformity. The Privy Council eventually backed the lessees, who were chartered as the Hostmen’s Company in 1600, with Jenison as their first governor.
In 1601, having just completed his term as governor of the Hostmen’s Company, Jenison represented Newcastle in the Commons, but in 1604 the seat went to Chapman, doubtless by mutual agreement. Jenison served as a lobbyist in London in 1610-11, and was returned to Parliament again in 1614. On this occasion, unlike his colleague alderman Sir Henry Anderson, he remained silent during the dispute over the return of alderman Sir George Selby as knight of the shire for Northumberland during his tenure as sheriff of county Durham. One positive consequence of this debate was the drafting of a bill for the enfranchisement of county Durham, and on 21 May Jenison called for the measure to receive a first reading. This motion was granted after some debate, but the bill progressed no further than the committee stage before the dissolution.
While Jenison did not sit in Parliament after 1614, on 21 May 1621 one ’Jenison’ petitioned the Commons about the warden of the Fleet prison; this complainant may have been the former MP, but is perhaps more likely to have been Michael Jenison, a barrister at Gray’s Inn.
