I built Midnight Never Come partly on the principle of “list everything awesome in that time period, then cram in as much of it as you can.” Which isn’t a bad method. So I’m going to repeat it again, and ask: who and what is cool in the seventeenth century?
I already know I’ll be using the Great Fire, the Civil War, execution of Charles I, Cromwell’s Commonwealth, and Restoration of Charles II. Maybe the Battle of Worcester, too. Other things springing to mind include Samuel Pepys, John Evelyn, John Milton, the Earl of Rochester, Aphra Behn, Restoration theatre, and the Dutch wars.
People, events, neat places, whatever. The broader a range of things I’m steeping in my head, the better this book will be.