[2] In addition to operating a store near the Occoquan River at the tobacco port called Colchester, his father also was a captain in the Fairfax County militia, and held various appointments to appraise estates, including that of prominent planter George Mason (which is now lost), who also owned land fronting Belmont Bay.
[4][5] Although the date of her death has been forgotten, and it occurred before the 1860 census, she may have been alive in 1856, when her father wrote his last will and testament (which indicated she had already received her inheritance).
[7] He operated an approximately 870 acre farm, part of Belmont Plantation in Fairfax County near the Occoquan River.
[13] In 1824, delegate Thompson objected to a legislative committee's recommendation for the sale of an infant child born in the Fairfax jail to Hannah Smith, the daughter of Bushrod Washington's life-long personal servant Oliver Smith and who had been convicted of trying to poison Washington's overseer in 1821.
[16] Thompson appears to have left Fairfax County by 1829 (possibly for the growing District of Columbia across the Potomac River).
In 1850, the Alexandria Gazette published a marriage notice for his daughter Marion (a/k/a Mary), who married Isaac Leeds of Philadelphia (actually Burlington County, New Jersey across the Delaware River) on the preceding February 28, in a service conducted by Rev.
In a census entry a decade earlier, farmer and household head Robert Thompson's gender is given as "female"[sic], his middle initial is spelled out as "Tuel", his birth year given as 1799 and birthplace as the District of Columbia (which didn't exist at the time) and his first wife Leah's name instead given as "Leo", and they lived in that western section of Fairfax County with several adult sons and underage daughters.
[18] The 1860 census also has the dual household living around Dranesville, by which time Thompson's occupation is as a "saddler" rather than "farmer" and his middle initial seems "S".