George Ellicott (1760–1832) was a son of Andrew Ellicott, who with his two brothers (all were Quakers from Bucks County, Pa.) founded Ellicott's Mills (now Ellicott City), Maryland. He was a mathematician, an amateur astronomer, a younger cousin of surveyor Major Andrew Ellicott and a friend of Benjamin Banneker. He was the father of Martha Ellicott Tyson (September 13, 1795 – March 5, 1873), who became an Elder of the Quaker Meeting in Baltimore, an anti-slavery and women's rights advocate, the author of a biography of Benjamin Banneker, a founder of Swarthmore College and an inductee to the Maryland Women's Hall of Fame.