When Abner Lemon died in 1900 in Coral, Michigan, the information for his death certificate was given by a John B. Lemon. I couldn't figure out who that was. I don't find any John B. with Abner's family in Macomb County, Michigan. But I did find an Isaac Lemon there. And Isaac Lemon and his wife Melvina had a son named John B. Lemon. I know that John Lemon, Baltis' father, who remained in Pennsylvania, had a son named Isaac. It was a popular name in the Lemon family, though I can't find an "original." I have a hard time believing that the older Isaac Lemon in Macomb County is not in some way related to my Lemons. And I believe, though I have no evidence to prove it, that the John B. Lemon who certified that Abner was the son of Baltis and Mary Lemon, is the same John B. from Macomb County.
I'm going to keep looking. These mysteries are fun as well as frustrating.