John Adams was born on October 30, 1735 (October 19, 1735, Old Style, Julian calendar), to John Adams Sr. and Susanna Boylston. He had two younger brothers, Peter (1738-1823) and Elihu (1741-1775), and a sister, Jerusha (1748-1810). Adams was born on the family farm in Braintree, Massachusetts. John Adams was born on October 30, 1735 (October 19, 1735, Old Style, Julian calendar), to John Adams Sr. and Susanna Boylston.