Clarence Ellis was born in Holyhead in 1889. He studied History at Bangor and served on the Western Front before beginning a career in Further Education. His private passion was pebble collecting, and Pebbles on the Beach was first published in 1954.
Robert Macfarlane was born in Nottinghamshire in 1976, and is currently a Fellow of Emmanuel College, Cambridge. He has written a number of bestselli...