Sir John Molesworth 4th Bart.

1705 - 1766


MP for Newport 1734-1741 and Cornwall 1744-1761. Shown with his son William (who predeceased him) as the owner of estates called Spring, Pitney and Cow Park 1740-1743. Sir John Molesworth's great-uncle Hender Molesworth had been a slave-owner, slave-factor and Governor of Jamaica.

Sir John and William Molesworth were listed in the Jamaican Quit Rent books for 1754 as the owners of 3269 acres of land in St Dorothy.

Sources [accessed 04/11/2019].

A List of landholders in the Island of Jamaica together with the number of acres each person possessed taken from the quit rent books in the year 1754', TNA CO 142/31 transcribed at

Further Information


Associated Estates (1)

The dates listed below have different categories as denoted by the letters in the brackets following each date. Here is a key to explain those letter codes:

  • SD - Association Start Date
  • SY - Association Start Year
  • EA - Earliest Known Association
  • ED - Association End Date
  • EY - Association End Year
  • LA - Latest Known Association
1740 [EA] - 1754 [LA] → Joint owner

Legacies Summary

Physical (1)

Country house
Pencarrow [Built] 
description →
Pencarrow, country house in Cornwall extended and remodelled by Sir John Molesworth 4th bart. and his son of the same name the 5th bart. in the 1760s, to designs by Robert Allanson. The house is...
notes →

Political (1)

election →
Newport Cornwall
1734 - 1741
election →
Cornwall Cornwall
1744 - 1761

Relationships (3)

Great-nephew → Great-uncle
Grandson → Grandfather
Nephew → Uncle

Addresses (1)

Pencarrow, Cornwall, Devon & Cornwall, England