Walton was born in Ireland and trained at the National College of Art and Design in Dublin, as well as Charles Cecil Studios in Florence, Italy. Walton has been featured in multiple Irish and International solo exhibitions. His commissioned portraits can be found in many public and private collections, including the National Self Portrait Collection of Ireland, The Irish Armed Forces and those of Trinity College and University College, both in Dublin. His work has also featured on book covers and postage stamps in Ireland and abroad. Walton paints principally from life, eschewing photorealism for more painterly values. While retaining an uncanny realism from a distance, on close examination his marksmanship is often gestural and the surface densely worked