I am a little confused here - maybe the Book of Dow is wrong about this family, but Capt.Timothy has no sibling listed named Amos. There are Timothy b. 1874; Mary b. 1780; Isaac b. 1789; Hannah b. 1786; and William b. 1793.
Marym. Philip Carrigan Baker and had sons Amos and Timothy, daughters Clarinda, Mary Ann and Mary Ann.
I also noted that it lists an alternate spelling for Gott as Gault. This is how it appears in the History of Pembroke. Author notes that the 2 spellings were interchaneable in early dates.
Are you sure that Timothy had a brother Amos? Do you have a date of birth. I'd like to add that info to the book.