I chose 'True'as a category, because Jacob Jennings is based on real events and for the most part, real people.
But I didn't like the idea of putting words in the mouths of real characters, such as Noah Smithwick. He wrote his own book, it's available now, and I have a copy! Instead, I used his story and the stories of a lot of other people. I condensed them into a few fictional characters, Jacob, Jean-Louis, Tom, Isom, and a few others.
Major events in the story? They happened, and I wrote them as faithfully as I could.
So, since SOL only offers a choice between 'true' and 'fiction', I chose True. Had there been the possibility of 'Partially true'...well...