Catherine Walker Johnson, born about 1786, was the daughter of Thomas Johnson Jr. Some sources say that he was the first postmaster in the District of Columbia as well as the first clerk of the Board of Commisioners for the City of Washington D.C.; also that he was the son of the governor of Maryland, Thomas Johnson - but this does not seem to be the same person. Catherine's father died in 1795 whereas the governor's son died in 1837 in Ohio. It is not known who Catherine's mother was.
Catherine was the first wife of Col. William Brent, clerk of the courts in Washington D.C. and temporary secretary to President Thomas Jefferson. They were married in Washington D.C. on 6 January 1805. They had six children - five boys and one girl - before Catherine died in July 1822. She is buried in St. John the Evangelist Cemetery, also known as the Carroll Cemetery, in Forest Glen, Maryland. After Catherine's death, William married Elizabeth Neale and they also had six children - five boys and one girl.
The words on her tombstone are difficult to make out, but one can read Catherine, and what looks like Walker; Wife of William Brent, of Washington, Obiit [she died] July A.D. 1822. What looks like a Latin phrase is followed by R.I.P.
Colonel William Brent
Carroll Cemetery, Forest Glen, Maryland
Photograph taken by Richard Dalrymple in 2012.