 This relationship flourished in an intense exchange of alchemical documents and information, unaffected by Backhouse's poor health and fear of identification in Ashmole's publications.Backhouse, predeceased by all his siblings and children, but one, died in 1662, leaving all his possessions to his daughter, Flower Backhouse, the last of the Backhouse family.Only so much can be understood about Backhouse, for his devotion to esoteric knowledge, and his distaste for the public eye (in accordance with his motto).