Census Search requested by Jean Farwell for Ancestor Marcus Delafayette Allen and Ancestor Horace N. Allen

Two copies of Census Search request (1850 and 1860) of Lineages, Salt Lake City, Utah by Jean Farwell for ancestors Marcus Delafayette Allen and Horace N. Allen.
More questions than answers are raised by this search. Horace Allen and March C. Bladgett have a daughter (Eva M.) born in West Boylston, Massachusetts on July 13/14, 1854 just days before the death of Horace's wife Nancy, who dies at age 25. Since baby Eva was conceived and born while Horace was married to Nancy, it's possible that Horace's uncle Marcus was named as the father. And so it goes. Eva was eventually adopted by William H. Bass.
Request for marriage records of Horace Allen/Mary Blodgett and Marcus Allen/Elsie Alberd (records 1433014 and 1433013) - no dates given. No record found for marriage of Susan Allen/Wm Bass. Also could not find record for marriage of Horace Allen/Nancy Goodnow

Year (or year range)
1995
Approximate era
1976-2000