Start from the ancient capital of the Duchy of Normandy. 

Simon and Diana's cheese was banished to the roof rack. 

Nothing clears a train compartment as fast as my Camembert, but my pyjamas smell of it too!

Decided I'm off to France to research Book Two of the Lionheart Chronicles. Where is the castle at Brionne? What does the Castle at Beaumont le Roger look like? Was there a ferry at Bouille in the twelfth Century? The search for authentic history goes intercontinental.