Biography
Born into one of the most afluent families in Virginia's history, Robert
was the son of William James Weir and Harriet Bladen Mitchell, whose own great-grandfather, Robert "King" Carter, had once
owned one-third of what is present-day Virginia. Carter had divided his land into twelve farms or plantations, each
named for a different sign of the zodiac. When her mother died in 1823, Harriet received a 1,660-acre portion of the
Cancer farm, located in northern Virginia, from her mother's estate. Six years later, William built Liberia,
a handsome, two-story Federalist brick mansion. Sometime around 1850, Robert married Mary Matilda, a twenty-three year
old woman from Virginia. The two would have at least four children, all daughters. In 1859, Carter bought Sudley
Mills, a milling complex located on Catharpin Run in Prince William County. Though the census for the following year
listed him as a farmer, he appears in the industrial schedule being connected with a grist and saw mill. Upon William
J. Weir's death in 1867, his estate passed to his son Walter, who died three years later. It is not known in what capacity
Robert played in his father's estate after 1867, but the following year Weir and his wife sold a twenty-five acre portion
of the Liberia tract, located at the northern end of Main Street in Manassas, to Christian and Anna Mathis, who had just moved
to the town from New Jersey. The deed says the Weir family was "of Prince William County, Virginia," and though
the following census lists the family living in Manassas Township, Robert's occupation was still listed as a farmer.
When Manassas became an official town in 1873, Robert served as the first Mayor, but resigned the following year since he
had moved out of town and opened a general store. A business license for 1875-76 shows his occupation as a retail &
tobacco merchant. Little else is known about the remaining years of his life. According to the 1880 census, he
was working as a clerk in a store. Four years later, Robert's wife died. In 1891, at the age of 65, Robert
remarried to Annie W. Adamson, a thirty-four year old woman from England. Robert Weir died in 1905 and is buried in
the Manassas City Cemetery.
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