found: Alchemy and alchemists, 2001:title page (Sean Martin) back cover (worked in book trade for many years; now a writer and film-maker; directed feature film "Mystery play") BL AL sent 18 Mar. 2002
found: BL AL received 25 March 2002(Sean Martin, born 22 December 1966)
found: The gnostics, 2006:title page (Sean Martin)
found: English Wikipedia, viewed June 13, 2022(Sean Martin (filmmaker); Sean Martin; born 1966 in Weston-super-Mare, England; Anglo-Irish writer and film director; he has written popular books on the Knights Templar and the Cathars; author of The gnostics; he studied film and history in Plymouth, England, and later lived in London. He is also a poet, and has had a number of poems published in various magazines in the UK and Ireland)