A newcomer to Hull, Roper was not apparently related to the town market-keeper William Roper (d.1587), or the latter’s son Oswald, a glover.
Roper played little part in municipal affairs while developing his business. He was involved in the transfer of the town grammar school’s lands to new feoffees in 1604, and as a lead merchant he was consulted by the corporation in 1607 over the decision to oppose the patent for prisage of lead granted to the customer of Hull, William Rande. In 1611 he was one of the burgesses chosen to select the town lands to be leased to defray the £500 spent on renewing the corporation’s charter.
Trade was badly affected by the outbreak of war with Spain, falling by one-third or more during the winter of 1625-6. At the general election of January 1626 the corporation chose the London alderman (Sir) Maurice Abbot*, but when he opted to sit for London, Roper was elected in his stead.
Roper stood for re-election to Parliament in 1628, but was rejected in favour of James Watkinson. He served an eventful second term as mayor in 1630-1, dealing with a grain shortage, a plague scare and the implementation of the Book of Orders, at which time he also paid £20 to compound for his knighthood fine.
Roper ceased to attend corporation meetings after March 1646, and on 18 Apr. a scrivener and the town clerk drafted his will. He left most of his property to his eldest surviving son, and legacies to relatives and friends in Hull and London. He was buried in Holy Trinity on 27 Apr. 1647. Probate of his will was granted at York on 5 Aug. 1647, and at London in 1654. His eldest son subsequently became a Hull alderman, but died only a decade later. None of his descendants sat in Parliament.
