Assuming Donovan was her birth surname and not her married name - I found only two possibilities in the 1870 DC census, although the age is off: Mary (age 3), daughter of Johana (age 40) assume widowed other siblings: Daniel (age 14), John (age 7), Jerrie (age 5), James (age 1) Mary A. (age 14), daughter of Dennis (age 38) and Catherine (age 32) Donovan other siblings: James (age 16), Daniel (age 15) Assuming Donovan is her married name, there are 383 Marys who are possibilities born about 1860 that are still living in DC in 1870. Chuck