https://familysearch.org/pal:/MM9.1.2/SMXJ-RM2/p_460154031
Household Gender Age Benjamin Christy M 37yspouse Mary Christy F 38ychild Mary Christy F 4y
https://familysearch.org/pal:/MM9.1.2/929N-G61/p_589277144
HeritageQuest online census collection.
The census taker may have thought he heard the names of wife and daughter were given as May E., but it was actually Mary.