English royalty had a reputation for having bad teeth in the 16th century. Sidney Mintz quotes a German traveller of the 16th century who met Queen Elizabeth at court:
"The Queen, in the 65th year of her age (as we were told), very majestic; her face oblong, fair but wrinkled; her eyes small, yet black and pleasant; her nose a little hooked, her lips narrow, and her teeth black (a defect the English seem subject to, from their too great use of sugar)."
Mintz, S. (1986 ) Sweetness and Power: The Place of Sugar in Modern History, London: Penguin. (p.134)