york32 Clifford's Tower (link2) The Great Tower of York Castle Built by Henry III Scene of Jewish massacre in 1190 Panoramic views over the city On the night of Friday 16 March 1190 some 150 Jews and Jewesses of York having sought protection in the Royal Castle on this site from a mob incited by Richard Malebisse and others chose to die at each other's hands rather than renounce their faith.