Beverly Swerling wrote a trilogy about colonial NY which was very good. The first book is City of Dreams. Vanishing Point by Mary Sharrot is also well done. Finally the Winthrop Woman by Anya Seton starts in England but moves quickly to Colonial America.
Diana Norman (recently, alas, deceased) wrote a trilogy about a tough woman innkeeper on the Massachusetts coast who has the misfortune to save from drowning an English Lord, about the time of the Boston Tea Party and the American Revolution: A Catch of Consequence/Sparks Fly Upward/Taking Liberties.
