Fenwick’s forebears took their name from a Northumberland manor that they first acquired in the early thirteenth century. By the late Tudor period they were a major force in the county. Fenwick’s father, William, who owned almost 20,000 acres, was an active figure in local government: twice sheriff, he served for many years as a deputy warden of the Middle March on the Scottish border. Despite his noted antipathy towards the Scots, he was knighted shortly after James I’s accession to the English throne, and was confirmed in his offices.
During the following decade Fenwick was accused several times of abusing his powers. A complaint in 1611 that he had seized a lead mine, ostensibly on the Crown’s behalf, was easily dealt with. However, in the following year he had to defend himself vigorously after the Scottish border commissioners informed the king that he and his English colleagues were neglecting their duties, and protecting criminals. In 1617 the archdeacon of Northumberland alleged that Fenwick was aiding the ‘great thieves of the county’ and generally perverting the course of justice, but on this occasion James personally discussed border affairs with Fenwick, and emerged satisfied with his performance.
In 1624 Fenwick was returned to Parliament as a Northumberland knight, in the election sparked by the elevation of Sir William Grey to the Lords. Although presumably present for most of the session, he made little impact on its proceedings. On 27 Apr., in his one recorded speech, he presented the names of five Northumberland officeholders with recusant connections, including Sir Thomas Riddell*, Sir William Selby II* and William Jenison*. Two days later, he was nominated to help scrutinize the bill on coal duties at Newcastle-upon-Tyne. He also attended the legislative committee concerned with sheriffs’ accounts, although he had not been named to do so.
At the start of the new reign Fenwick fell from grace, temporarily losing his role as a border commissioner. The cause of his troubles is not known, but in February 1626 he sued out a royal pardon for contravening several statutes.
Already a very wealthy man, Fenwick now increased his interests in coal-mining, acquiring a number of new pits in 1628 and 1632. He remained an active figure in local administration during the 1630s, collaborating at the start of the decade with the president of the Council in the North, Viscount (Sir Thomas) Wentworth*. A notable horse-breeder, he also acquired a Court position as surveyor of the royal stud.
Fenwick helped to mobilize Northumberland’s trained bands for the First Bishops’ War, and represented the county in the Short Parliament. He served as muster-master for the royal army during the Second Bishops’ War, but lost face locally by retreating to York after the Scots captured Newcastle-upon-Tyne. This disgrace probably accounts for his complete failure at the elections of November 1640. Nevertheless, he was returned for Cockermouth in the following year, apparently without taking up his place, and stepped up to a Northumberland seat yet again when a vacancy arose in 1642.
