The two patrons of the
pocket borough of Callington were the Rolle family of
Heanton Satchville, Petrockstowe, Devon (a junior branch of the Rolle family of
Stevenstone and
Bicton in Devon) and the Coryton family of the adjacent manor of St. Mellion, Cornwall.
Rolle patronage In 1601 Robert Rolle (died 1633) of
Heanton Satchville, Petrockstowe, Devon (a grandson of
George Rolle (d.1552) of
Stevenstone, founder of the Rolle family in Devon), purchased the manor of
Callington in Cornwall, thereby gaining the
pocket borough seat of Callington in Parliament, which in future served to promote the careers of many Rolles and descendants of that family. He nominated to this seat his first cousin once-removed
John Rolle (born 1563) in 1601, his brother
William Rolle (died 1652) in 1604 and 1614, his son Sir
Henry Rolle (1589–1656), of
Shapwick, in 1620 and 1624, his son Samuel's father-in-law
Thomas Wise (died March 1641) of
Sydenham in Devon, in 1625, and another son
John Rolle (1598–1648), in 1626 and 1628. The manor and borough were later inherited by the Rolle heiress
Margaret Rolle (1709-1765),
suo jure 15th Baroness Clinton, wife of
Robert Walpole, 2nd Earl of Orford whose son and heir
George Walpole, 3rd Earl of Orford (d.1791) died without progeny. It then passed by inheritance to her cousin George William Trefusis, of
Trefusis in Cornwall.
Robert George William Trefusis (1764–1797) successfully claimed the title (17th) Baron Clinton in 1794. By 1816 it had passed to
Robert Cotton St John Trefusis, 18th Baron Clinton but was no longer as secure as it had been, so that the Coryton family was sufficiently influential to challenge his power on occasion. ==Members of Parliament==