Mary Bathurst was the daughter of Lancelot Bathurst of New Kent. He was sheriff, coroner, and burgess until ca.1700, his death. Mary had a sister Susannah and a sister Elizabeth. Her brother Lawrence left no issue. Mary married first Franics Meriwether, secondly Reuben Welch (no issue), and thirdly, John Robinson, sometime acting governor whose son from a previous marriage was "Speaker John" Robinson, speaker of the House of Burgesses for more than 30 years in the 1700s. Mary had no issue by John Robinson. Mary's issue were: Elizabeth who m. Drury Bolling; Francis (d. unm.); Jane who m. James Skelton; Mary who m. first Wm. Colston and secondly Thomas Wright Belfield; and Lucy who m. Francis Smith. Lucy's grandson was Geo. Wm. Smith, the governor who died in the 1811 theater fire in Richmond. Through Mary Bathurst Meriwether can be traced John Randolph of Roanoke, Henry St. Geo. Tucker, Nathaniel Beverley Tucker, and all of the Richmond newspaper Bryan family.

Mary's grandparents were Sir Edward Bathurst and Susan Rich. The earliest traceable direct Bathurst ancestor is Richard who was b. ca. 1400.