Peter Boylston Adams was born in 1738 in Braintree, Massachusetts, the second son of John Adams Sr. and Susanna Boylston Adams. His elder brother was the future president John Adams, and his younger brother was Elihu Adams. The family belonged to the substantial yeoman class: farmers and local officeholders whose identity rested on land, Congregational religion, manual work, and town participation. Peter grew up at the family farm under the disciplined influence of his father, a deacon, selectman, militia officer, farmer, and shoemaker. Unlike John, who attended Harvard College and entered law, Peter followed a more local path. His education came through Braintree schools, church, household labor, and practical training in agriculture and business. He learned to manage crops, livestock, tools, accounts, and property. In a New England town, farming existed alongside militia musters, road work, tax assessment, church affairs, and town meetings. These institutions taught civic habits even to men who did not seek provincial fame. Peter married Mary Crosby and established his own household. Family relationships remained important, particularly as John’s legal and political career carried him away from Braintree. Peter helped sustain the local Adams presence and managed ordinary responsibilities that rarely appear in national histories. Before the Revolution made his brother famous, Peter had been shaped by the same household values—thrift, independence, literacy, religion, and public duty—but applied them to farming rather than law. His early life demonstrates that the Adams family’s political achievement emerged from a broader rural foundation. The labor and continuity maintained by relatives such as Peter helped preserve property and family networks while John served in Boston, Philadelphia, and Europe.