Father of Hildred de Calvados Castaigne and husband to Edythe Landes Castaigne, as detailed in The Imperial Dynasty of America. Presumably Hildred de Calvados is Hildred Castaigne (since The Imperial Dynasty of America also lists his cousin as Castaigne, Louis de Calvados), hence cataloguing him here as Hildred Castaigne Snr. Alternatively this Hildred Castaigne is the one who narrates The Repairer of Reputations, and Hildred de Calvados is an heir he is destined to produce, and Edythe Landes Castaigne a wife he is destined to marry. Either of these possibilities would explain his eager rapt attention to the particular passage of the manuscript that lists the father, mother and only son.