51. Proofs for Deborah O'Neill

Deborah O'Neill, daughter of Hugh and Deborah O'Neill, is proving elusive. The only documentary proof we have of her is two mentions:

A. A marriage notice in Muskingum County, Ohio, as follows--

It seems to me that Deborah moved to Zanesville with her father right after the death of her mother. She probably met John Dearden at that time and married very quickly.

B. She is also listed on her daughter's death certificate in Lancaster County, Ohio--

I have not found any record of Deborah O'Neill Dearden's death or burial. John and his daughter later lived in Belmont County, Ohio, and possibly Brooke County, (W)VA. Any suggestions appreciated!