WebSuch a mitre appears on a seal of Archbisho p Thomas Becket (Father Thurston, The ?P allium, London, 1892, p. 17), The custom was, however, .already growing up of setting the horns over the front and back of the head instead of the sides (the mitre said to have belonged to St Thomas Becket, now at Westminster Cathedral, is of this type), 1 and with …