Silas spent his childhood on the family farm in Windham, and eventually went on to attend Dartmouth College; he graduated in 1787. He began to study law and was admitted to the bar in 1790. That same year he moved to Salem, NH where he started his own law office. It was as a lawyer that Betton signed the document below. The document appears to concern a client of his, Mr. Huse, who settled an action against him. It is also signed by John Dinsmoor, formerly of Windham, who was a justice of the peace at the time.
Shortly after he moved to Salem, Betton married Mary Thornton, the daughter of Matthew Thornton, the signer of the Declaration of Independence. Together the couple had seven children, all born in Salem. Silas Betton died on January 22, 1822 at the age of 54. He was interred at the Old Parish Cemetery in Salem. Mary Thornton Betton survived him by over two decades, passing away in either 1845 or 1846.