An Elijah Hoag and a different Ezekiel Hoag are also mentioned in a June 1791 probate record. I don't think he is the same person, as his father is Ezekiel Hoag, not Jonathan Hoag Senior.
"New York, Probate Records, 1629-1971," images, FamilySearch (https://familysearch.org/pal:/MM9.3.1/TH-1951-35089-15445-32?cc=1920234&wc=9V7Z-166:213305701,223046501 : accessed 25 July 2015), Dutchess > Probates 1793-1868 packets 1-251 > image 284 of 1429; county courthouses, New York.
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