Two tidbits from a Guardian review by Jan Morris of Simon Jenkins's book on Welsh buildings:
All is vigour, all is insatiable interest. Do you know why a medieval lavatory was called a garderobe? Because clothes were placed above it in the belief that stinks were fatal to fleas. For that matter, do you know how Catherine Zeta Jones got her middle name? Because her shipowning forebear named his ships after the Greek letters of the alphabet.