and Martin was given the Greenway Court estate. He took his uncle's housekeeper Mrs. Crawford as his mistress and died unmarried in 1798. Martin bequeathed his Greenway Court estate and an adjoining to his housekeeper Betsy Powers. Martin's brother Denny Fairfax was unable to properly maintain the proprietary and conveyed the remaining lands in 1797, thus terminating the Fairfax and Martin families' interests in the proprietary before it was formally dissolved in 1806. The city of Martinsburg, West Virginia, was named for Martin by his friend Adam Stephen. Early life and family Thomas Bryan Martin was born in Kent, England, in 1731 and was the son of Denny Martin (1695–1762) of Salts Manor and his wife Frances Fairfax Martin (1703–1791). His father and mother married in Loose, Kent. Martin's mother was the daughter of Thomas Fairfax, 5th Lord Fairfax of Cameron (1657–1710) and his wife Catherine Colepeper Fairfax, and thus a sister of Thomas Fairfax, 6th Lord Fairfax of Cameron (1693–1781) and Robert Fairfax, 7th Lord Fairfax of Cameron (1707–1793). His grandmother Catherine Colepeper Fairfax was the daughter of Thomas Colepeper, 2nd Baron Colepeper and his wife Margaretta van Hesse, who was from a Dutch noble family. Martin was named in honor of his uncle Thomas. He was baptized into the Anglican faith as "Thomas Brian" in Loose on April 11, 1731. Martin and his siblings were raised amid humble surroundings in England. He had seven siblings, including four brothers and three sisters: Edward Martin (1723–1775) John Martin (1724–1746) Reverend Denny Martin (later Fairfax, 1725–1800) Frances Martin (1727–1813) Sibylla Martin (1729–1816) Philip Martin (1733–1821) Anna Susanna Martin (1736–1817) Northern Neck Proprietary administration Martin's uncle Thomas Fairfax, 6th Lord Fairfax of Cameron (known as Lord Fairfax) owned the Northern Neck Proprietary land grant, which he had inherited from Martin's great-grandfather Thomas Colepeper, 2nd Baron Colepeper in 1719. The proprietary constituted up to of Virginia's Northern Neck and a vast area spanning west to the North Branch Potomac River headwaters. The Northern Neck Proprietary had been awarded by the exiled Charles II of England to seven of his supporters in 1649, and again in 1688 by official patent. One of these seven supporters, Lord Colepeper, acquired the right to the entire proprietary in 1681, and his grandson, Lord Fairfax, inherited the land grant upon the death of his mother, Katherine Colepeper. Lord Fairfax dispatched his first cousin William Fairfax (1691–1757) to replace