I think it's clear they are the same person, and should be merged, and I'd put David and Ruth as his parents.
Once you clear away the gedcom junk on both profiles, the sources on the Hoar-20 profile are just the censuses (1871, 1861, 1851). The other profile has also the book reference, the 1820 marriage, and the birth record, which is the only source that points at parents.
The 2 wife profiles would need to be merged as well, and the 2 profiles for daughter Lucinda.