Leading Scottish paperweight maker. Signature cane ‘WM’. Apprenticed to Paul Ysart at Caithness to 1970 and Paul Ysart Paperweights c1970, assistant to Paul Ysart. At Caithness again, later producing work with his own canes. 1997 set up his own studio in Perth. ‘Manart’ glassware, a modern and original developement of the Ysart style. 2004 closed studio, now working with John Deacons