Fiction by Tracy Chevalier.
Tracy Chevalier's novels usually feature real people from history, and she is a master at bringing the past to life. This particular book centers around fictional people, but historical figures walk into the plot sometimes.
I was interested to meet the famous Johnny Appleseed in this story, portrayed in a way that seems more believable than the one-dimensional legend he's usually shown as.
I also read by this author recently: Remarkable Creatures.