Hello.Yesterday I accidentally came across information on this couple.I actually found information on their daughter, Elizabeth Palmer PEABODY, and then found the information in the "History of Billerica, MA."
They either married in Billerica instead of Andover, or moved to Billerica shortly after their marriage, as the first child, Elizabeth, was born in Billerica in 1804.
Miss Elizabeth PEABODY was a well-known promotor of early-childhood education, and started the very first Kindergarten in the U.S. in Boston, MA.
The next daughter married .. Horace MANN. The next daughter married .. Nathaniel HAWTHORNE. Their son, Nathaniel PEABODY, lived in Concord, MA, until after Age 80.