I have a Mary Davis, mother of Theodore Davis, living in his household in Warren Co, IN in 1850. She was 52 years old, birthplace listed as unknown in the census. Her son, Theodore, was 23, and listed as born in Ohio. Theodore's wife, Amanda Ward Davis, age 18, and son, James Marion Davis, age 6 months, were also living in the household. There is also a Rebica A. Davis, age 10 in the household. I don't know her relationship - possibly Theodore's sister. Please contact me if this is your Mary. Theodore is my ggggrandfather.