Is your maternal grandmother Myrtle Lowder?
1900 Indiana Henry County, Wayne Township
KEERNS [written as I decipher the spelling], Isaac F., head, white, male, born August 1829, age 70, married 42 years. Born North Carolina, parents born NC. Farmer
KEERNS, Susanah J., wife, white, female, born May 1838, age 62, 3 children born with 1 still living. Born NC, parents born NC
KEERNS, Robert F., son, white, male. Born June 1862, age 37, divorced. Born North Carolina, parents born NC. Farmer
LOWDER, Myrtle, servant, white, female. Born April 1884, age 16, single. Born North Carolina, both parents born NC. Attending school.
Is this the correct person? Can you add more info?