 He was encouraged by Robert Hooke to study the natural history of Somerset but became more interested in witchcraft.He married Dorothy, daughter of John Speccott of Penheale, Egloskerry, Cornwall

John Beaumont sent four letters to the Royal Society, two in 1676, one in 1681 and another in 1683.The topics he touched upon included rock plants, ailments afflicting both cattle and miners, detailed descriptions of some Mendip caves, including Wookey Hole Caves and Lamb Leer Cavern.