Hello again Heidi
I guess the record for Susannah 1801 - 1862 is your tree (search on "Susannah Harmon 1801"). If not yours you should check it out as here she marries David G Bowers and her fathers name is given as John Harmon. The G almost certainly stands for Grim as his mother was Mary Grim.
Is there any chance that Susannah Harmon married twice. If this possible then check out Susannah born in Durham, Androscoggin County, Maine, USA, on 05 October 1801 to Francis Harmon and Betsey Dyer. Apparently she married David Rogers, 14 March 1825, and they had six children. Bit of a long shot as would give her a total of 20 children !
You might like to see if you can borrow the 1920 print version of the following book through your local library :
Harmon, Artemas C. The Harmon Genealogy Comprising All Branches in New England, Second Publisher: Historical & Genealogical Books On CD, Second Address: 19 Gall. (Gibson Bros., Inc, Washington, D.C., 1920, Second Date, 2000).