dewsbury minster lies near the river calder, traditionally on the site where paulinus preached. some of the visible stonework in the nave is saxon, and parts of the church also date to the 13th century. the tower houses "black tom", a bell which is rung each christmas eve, one toll for each year since christ's birth, known as the "devil's knell", a tradition dating from the 15th century. the bell was given by sir thomas de soothill, in penance for murdering a servant boy in a fit of rage. the tradition was commemorated on a royal mail postage stamp in 1986.