Hi I received your message, I have Heritage Quest and found John G. age 33 farmer Born NH Married to Addie A. age 31 Keeping house in the 1880 census. In 1870 census he was not married he was age 23 Born NH Hillsborough County Manchester, NH. Did you ever go on Genealogybank.com If someone is written about in a newspaper, sometimes you can find the article. Here is one I found, I think he is your John because of the middle initial being G.Not too many with that. I did find this one article." THE EASTMAN TANNING CO. HAS DESOLVED AND MR. bUFFUM WILL USE HIS LATHE IN THE SERVICE OF JOHN G. ABBOT." Date Jan. 28, 1891 in the Sentinel News article STODDARD (I think Stoddard is a county in NH), will find more tomorrow.
I did look in 1890 and 1900 census, I don't know where they went,but I did look in all states for them. I will be in touch. Lynn