Jeremiah Dixon
Jeremiah Dixon FRS was an English surveyor and astronomer who is best known for his work with Charles Mason, from 1763 to 1767, in determining what was later called the MasonDixon line.
Dixon was born in Cockfield, near Bishop Auckland, County Durham, in 1733, the fifth of seven children, to Sir George Fenwick Dixon 5th Bt. and Lady Mary Hunter. His father was a wealthy Quaker coal mine owner of the Northumberland Landed Gentry. His great grandfather was Robertus Dixon. His mother came from Newcastle, and was said to have been the cleverest woman to ever marry into the Dixon family. Dixon became interested in astronomy and mathematics during his education at Barnard Castle. Early in life he made acquaintances with the eminent intellectuals of Southern Durham mathematician William Emerson, and astronomers John Bird and Thomas Wright. In all probability it was John Bird, who was an active Fellow of the Royal Society, who recommended Dixon as a suitable companion to accompany Mason.
Source: Wikipedia