Francois de Guise
From Tardis Wiki, the free Doctor Who reference
Francois de Guise was the French Catholic Duke of Guise in the 16th century. On 1 March 1562, twenty-five Huguenots were killed at a Reform Church in Wassy, France by Francois de Guise. This act sparked the French Religious Wars. (TV: The Massacre; PROSE: The Massacre)
