In checking Andover Massachusetts History, this is part of the Wikipedia article:
"...Records show that on the morning of April 19, 1775, approximately 350 Andover men marched toward Lexington. Although they did not arrive in time for the battle that day, they did go on to participate in the battle of Bunker Hill two months later and fought in subsequent skirmishes with the Redcoats during the war..."
There are two relevant projects, Susan. The Puritan Great Migration project works with genealogy for people who arrived in New England between 1621 and 1640. People who were born in Massachusetts or arrived after 1640 are covered by the Massachusetts subproject of the US History Project.