last living heir died in 1912!
I am your only source of information on this family. I am the last living person with knowledge of this family! My father was half-brother of last heir. The mother and father you list for Eulogio were grandparents who both died in the early 100's. Maybe earlier, because there were three Eulogio DeCelis's. The last of them dying in about 1865.
Please let me know what your action is on this matter!