The Symmeses had begun planning for the child's arrival long prior to his adoption. There were terms for his adoption that had to be met: he had to be born at the time and place appointed by the astrologers, his mother was to die shortly after giving birth, and he was to be of Anglo-Saxon Protestant descent. His childhood was stable, and his parents were popular and social members of their community—Edwin was a prominent architect and Minnehaha devoted much of her time to volunteering and serving on committees. He grew up surrounded by the occult in one form or another; he was well aware of the circumstances of his fated birth and adoption and his parents carefully interpreted his dreams. The family adopted a second child, Barbara Eleanor Symmes, in 1920. She was born one year minus one day after Duncan, on January 6, 1920. She also was selected under circumstances similar to that of her brother; her presence was expected to bring good karma into the family.