Mary was born about 1817 in River Street, Congleton, Cheshire, England, the daughter of Thomas Hersfield and Harriet.
She has died but the date and place are unknown.
Her husband was John Washington, who she married in ABT 1840. The place has not been found. Their nine known children were Harriet (c1841-?), Thomas (c1844-?), Sarah (c1847-?), James (1850-1929), John (c1852-?), Henry (c1855-?), Jane (c1857-?), Martha (c1860-?) and Mary (1862-?).
!Source: 1861 Census.