Researching the Bickmore Family from Lincoln County, Maine

So many John Bickmores! Who's the John in my niece's family tree who resisted the British in 1770s and who, with his wife, signed a petition against the king? That's the Bickmore I want to find so I can verify his Revolutionary War activities, confirm the genealogy line, and Katie can qualify for the DAR. Here's the limb of this family tree I'm seeking to verify: George Bickmore (b. 1705? in Norfolk Cty, MA) --> John Bickmore (b. 1731? in Suffolk Cty, MA) -->David Bickmore (b. 1764? in Meduncook, Lincoln county, Maine) -->Samuel David Bickmore (b. 1806, Friendship, ME) --> Martha Jane Bickmore (b. 1842, Nauvoo, IL). 

Still researching this in 2022, seeking proof of the relationship between Martha Jane Bickmore Huntsman and her possible father, Samuel David Bickmore.