Martyrdom of Thomas ? Becket, 1400 (?), British (?), Ivory, Overall: 3 7/16 x 2 5/16 x 1/4 in. (8.7 x 5.8 x 0.6 cm), Ivories, Thomas Becket, archbishop of Canterbury from 1162 to 1170, is perhaps best known for his struggles with King Henry II of Eng