martyr Thomas Becket. A canonized saint whose tomb was a pilgrimage site that drew thousands of visitors from around England and the continent, Becket had been murdered in 1170 by a trio of knights who thought, probably mistakenly, that they were carrying out the wishes of King Henry II. Becket and the king, once the closest of friends, had come to be bitterly at loggerheads over the latter’s insistence on trying clerics in his own courts and blocking appeals to Rome.