[2] His ancestors had long been active in the county administration of Cornwall and he was himself ancestor to many eminent men, several members of parliament, the Buller baronets and Baron Churston and the famous soldier Major-General Sir Redvers Buller (1839–1908), VC.
The Bullers were a west country family who had become yeoman tenants following the dissolution of Glastonbury Abbey.
John Buller was the second son of Francis Buller, MP for Cornwall in 1640, of Shillingham near Saltash, in Cornwall and Ospringe in Kent[3] by his wife Thomasine Honywood[4] daughter of Sir Thomas Honywood.
[2] He entered the Middle Temple on 29 January 1646 and matriculated at Trinity College, Cambridge on 6 July 1647.
[6] Buller served as MP several times as follows:[7] He was appointed High Sheriff of Cornwall from November 1688 to March 1689.