The 1860 census shows Martha A Bowers, age 65, living with his family.
The 1850 census shows her living with Benjamin Bowers:
Year: 1850; Census Place: District 3, Kent, Maryland; Roll: M432_294; Image: 575
Marriage Record shows Benjamin married Ann Thomas(Martha Ann Thomas):
Dodd, Jordan, Liahona Research, comp.. Maryland Marriages, 1667-1899