An esteemed colleague has kindly pointed out that the statement in my article in American Lutherie #103 that “Francisco González was the founder of the Madrid school of guitar making” is probably not accurate. According to José Romanillos’ conclusion in Antonio de Torres Guitarmaker – His Life and Work (p. 44-45 1st edition, p. 55-56 2nd edition) Marcos Antonio González should more likely be considered the founder of the Madrid school, although it appears that Francisco González did teach José Ramírez I.