Today I sent my host family an email. I eagerly await their reply. I found the official tourism website of the town Marchiennes. The site is in French so for those of you who can understand click the first link, for all you folks who can't (I had had to translate for maximum comprehension) I've translated it so choose the second link.
-e a la france
p.s. I found out its not in Normandy (my dad was wrong) it is in the region called Nord-Pas-de-Calais