John Yeomans Cowlishaw blew his head off with a shotgun in the water-closet of his home, Tapton Cliffe, Fulwood Road on 23rd January 1895 aged about 65. He had been depressed following the death of his wife two years previously. He was a nephew of John Newton Mappin and continued with Mappin's pearl business in Norfolk Street, subsequently moving to Bakers Hill and the Arundel Street, where he was a pearl cutter and manufacturer of silver fruit knives, For 22 years he was a director of the Sheffield and Hallamshire Bank, Chairman for the final 10 years. He was also Chairman of Mappins Brewery in Rotherham, and a director of Newton Chambers and Company, and a shareholder in Joseph Rodgers and Sons, Norfolk Street. He was involved in the establishment of the Mappin Art Gallery, which was based on John Newton Mappin's art collection. His uncle, J.N Mappin bequeathed him his shooting lodge at Moscar, which explains the presence of guns at his home. He left 3 sons, John (Arundel Street works), Frederick (Rotherham brewery) and Frank (in London)