A hand carved Coat of Arms for Collingwood College, University of Durham in Welsh Slate Additional pages showing Process of carving Coat of Arms Hand carved Wyvern in 15 inch diameter welsh slate. Olney is the home of the "Olney hymns", written by William Cowper and John Newton; the most famous of which is Amazing Grace. This plaque includes the Olney coat of Arms. A hand carved Christian Ichthus symbol in Welsh Slate. A hand carved Celtic interlaced Male Figures from the Book of Kells. Interlaced animal from the Book of the Kells in rough slate. A hand carved Celtic interlaced "Zoomorphic" creature.