Here is additional information.
The Mirror newspaper Thursday, 17 July 1890 Vol. XXXV, No. 6
Mrs. Mary Ann NIXON, widow of the late George NIXON, of this county, committed suicide by hanging on Thursday last, at the residence of Mr. Ed. HAWLEY, about 3 miles S of Leesburg. She was about 75 years of age and had been twice in her lifetime an inmate of the asylum. Interred in Presbyterian churchyard, Leesburg, on Friday evening, Rev. B. W. BOND officiating.
The Mirror newspaper Thursday, 5 October 1876 Vol. XXI, No. 16
Mr. George NIXON, of this county and a soldier in the war of 1812, died at the residence of Mr. James W. CONNER, near Woodburn, on Saturday morning last, in the 88th year of his age. His remains were interred in the Presbyterian burying ground at Leesburg on Sunday.
Loudoun Co Death Register:
NIXON, Mary, white female d. 10 Jul 1890, Loudoun, unknown, 74-0-0, parents: unknown, b. Loudoun, none, unmarried, source: E. Hawley, nephew, 2nd Dist, Bureau of Vital Statistics:1890:3
Loudoun Co Marriage Register:
George Nixon & Mary Ann CONNER; m. Apr 1854 in Loudoun; 25 Apr 1854(license); Jos Mead(proved age); JH(official); 3 Nov 1860(return)
From “Loudoun Co Will Book Abstracts, Books 2A-3C” by Pat Duncan:
Will of 30 Sep 1858: wife Mary Ann NIXON (named Exor), sisters Ruth BELL & Joanna BIRKHEAD, witnesses Jno. W. THOMAS, William LICKEY & S. Geo. DONOHOE. Received in court 13 Feb 1877. Admr wwa Jonah NIXON. $400 bond with surety James E. CARRUTHERS. [3B:50