So Della, tell me how I can help. Do you need a lookup in the 1900 census for someone with the Dolphus surname?
Also, it was not uncommon for them to have taken the Dolphus surname in 1880 since Aaron was the head of household. What did the 1880 census say was the relationship of Phillip and Frazella to Aaron Dolphus (i.e son/daughter,boarder)?