Ella Rossiter says Daniel and Mary had a daughter Elizabeth who married John Bakeless. In the 1850 Census, this daughter appears to be named Anna E. She may then be the Anna Hummel of Penns Twp who marries Percival Beaver in 1858. That could explain why John Beckless of Monroe Twp has a wife named Louisa in 1850 age 28.

Obviously not every detail is clear about this woman.