John Hearle Tremayne (17 March 1780 – 27 August 1851) was a member of a landed family in the English county of Cornwall, and owner of the Heligan estate near Mevagissey.
Henry Hawkins Tremayne (1741–1829) and Harriet, his wife, the daughter of John Hearle of Penryn.
[1] Their children were: John Hearle Tremayne inherited the Heligan estate from his father in 1829.
In 1808, he was responsible for the introduction to parliament of Grylls' Act, more formally known as the Burial of Drowned Persons Act 1808, which provides for the decent interment of bodies washed ashore in consecrated ground and was a consequence of the loss of the Royal Navy frigate HMS Anson in Mount's Bay in the previous year.
[8][9] In addition to his parliamentary service, John Tremayne was a Justice of the peace and, in 1831, High Sheriff of Cornwall.