Amos was a Captain in the 15th Regiment of the Connecticut Militia in the 1776 War of the Revolution.
"Amos Beecher and Rebecca Abbott were married at Northford 23 November 1870. This Amos was listed in Southington in the U. S. Census of 1790, which indicates that he then had a family of several children. I have a note to the effect that the children were Samuel, Lucy, Amos, Rebecca, and Salmon, and tho this note was made many years ago I feel reasonably certain that I took it from Orcutt’s "History of Wolcott”. I did not feel at all confident of the accuracy of this list of children, so omitted the children of Amos in my accounts of the Beecher family which occupies 19 pages in the third issue of my New Haven Genealogical Magaxzine.” ®3300

Jacobus shows 1st marriage to Rebecca Abbott; 2nd to Mary _____ . Says had issue, but not by which marriage(s). Entry from Wolcott Congregational Church 1:7. Samuel, Luce, Amos, Rebecca, and Salmon Ichabod, children of Capt Amos Beacher, baptized 29 July 1781 "dedicated by his 2nd wife". Moved to and settled in Wolcott before the year 1770. A prominent man in society like his brother Joseph.
Did Amos divorce Rebecca as she outlived him, and otherwise there is no time for a second wife, who apparently was married to him by 29 July 1781? If so, then Joseph is the son of the second wife.