Ebenezer lived in Fairfield, and Abraham lived in Waterbury, therefore I do not believe they were brothers, but cousins. The kin of a Francis the immigrant tended to go to Fairfield. The kin of John of Farmington the Immigrant went to Waterbury. Stephen Andrews who was a Loyalist, went to Canada during the Rev War. And then the name change to Andress.
I have dna matches to Abraham, Eldad, Mabel Thomas, and Rhoda, but none to Ebenezer or his descendants, which I would have if they were brothers.