Look at the 1870 census in Lawrence, Lawrence, Ohio. I believe you will find Angeline Townsend, age 19 listed as well as William age 15.
James Townsend 52
Margret Townsend 45
Angeline Townsend 19
William Townsend 15
Margret E Townsend 12
Calvin Townsend 6
Daniel Townsend 2