[2][3][self-published source] His father was born in Lanarkshire, and became Controller of the Storekeepers' Accounts for the Navy Board.
[18] Together, they were the parents of two sons and two daughters, including: Clevland died at Tapeley on 18 June 1763,[5] as is recorded on his monument in Westleigh Church, as a result of having "contracted a complication of disorders" due to his "constant application to the discharge" of his office of Secretary of the Admiralty.
His mural monument survives in Westleigh Church, inscribed as follows: "Sacred to the memory of John Clevland Esqr.
of Tapley in the county of Devon who for the space of forty years served his king and country with the greatest honor and fidelity the last seventeen years of which he was joint and sole secretary of the Admiralty in which office through a multiplicity of business and his constant application to the discharge of it he contracted a complication of disorders which occasioned his death at Tapley 18th June 1763.
of Orleigh in Devon, with whom he intermarried in the year 1743 who dying left issue one son; Sarah the daughter of Chas.