Annoying isn't it? Currently researching events that happened in 1317 and trying to place three pivotal characters in close time/space proximity to start a doodle. Thought I had it and started to get down to some writing. Got about 3000 words written, went to check a detail and incidentally found that one wasn't even in the country on the particular date. Bloody annoying when historical events don't line up with my neat envisaging.