Purple secret genes madness and the royal houses of europe rohl john c g etc warren martin hunt david isbn 9780552145503 kostenloser versand fur . First published in 1998 this is a study based on dna sequencing that traces the porphyria stain through the genealogical maze of europes royal dynasties to the present day descendants of the houses of hanover and windsor and the consequences it might have had on the history of europe and north america. Purple secret genes madness and the royal houses of europe paperback january 1 1999 by john c g rohl author 45 out of 5 stars 14 ratings see all formats and editions. Purple secret genes madness and the royal houses of europe hardcover july 2 1998 by martin warren author david hunt author john rohl author 0 more 45 out of 5 stars 16 ratings. Purple secret reads like a historical detective novel trying to uncover evidence of a secret debilitating genetic disease in the royal line of england except its not fiction the disease is porphyria an incurable metabolic disorder of the blood that produces many highly unpleasant sounding symptoms including violent abdominal pain neuropathy skin lesions and rashes dark red or blue urine and mental disturbances in the 1960s the theory was first made that king george iii