Robert Byng was the third son of George Byng, 1st Viscount Torrington

George Byng, 1st Viscount Torrington

Admiral of the Fleet George Byng, 1st Viscount Torrington, KB PC was a British naval officer and statesman of the late 17th and early 18th centuries. His career included service as First Lord of the Admiralty during the reign of King George II.-Naval career:Byng was born at Wrotham, Kent, England...

 by his wife Margaret Master. On 19 December 1734 he married Elizabeth, daughter of Jonathan Forward, and by her had issue, including an eldest son, George, born 1735. This George, later of Wrotham Park

Wrotham Park

Wrotham Park, Hertsmere, Hertfordshire is a neo-Palladian English country house, designed by Isaac Ware in 1754 for Admiral John Byng, the fourth son of Admiral Sir George Byng, which remains in the family at the heart of a estate seventeen miles from Hyde Park Corner...

, was the father of John Byng, 1st Earl of Strafford

John Byng, 1st Earl of Strafford

Field Marshal John Byng, 1st Earl of Strafford, GCB, GCH, PC was a British peer, politician and soldier.-Early years:...

. Robert Byng served as Member of Parliament (MP) for Plymouth

Plymouth (UK Parliament constituency)

Plymouth was a parliamentary borough in Devon, which elected two Members of Parliament to the House of Commons in 1298 and again from 1442 until 1918, when the borough was merged with the neighbouring Devonport and the combined area divided into three single-member constituencies.-In the...

 from 1728 to 1739 and as Governor of Barbados from May 1739.