During my research, I pulled this interesting obituary from GenealogyBank:
1784 Mar 16, Connecticut Courant, P3, Hartford, Connecticut
Hebron, February 15, 1784
This day departed this life, Mrs. Lydia Peters, the wife of Col. John Peters, and second daughter of Joseph Phelps, Esq. She was married at the age of fifteen, and lived with her consort three times fifteen years, and had fifteen living children, thirteen now alive, and the youngest fifteen years old; she hath had three times fifteen grandchildren; she was sick fifteen months, and died the fifteenth day of the month, aged four times fifteen years.