Essex was then contacted by a man who wanted to show him something that would pique his interest. Cut-off from funding, he visited a bar to drink away his sorrows. When Essex brought these theories to his scientific peers, among them Charles Darwin, he was ridiculed and called a monster for coming up with ungodly theories. He classified these possibilities as 'Essex Factors.' His research eventually evolved into a theory that humanity was steadily evolving, with various mutations as a possible outcome. Unbeknownst to his wife, Essex even utilized his son's body as a test subject in hopes of figuring out what had caused his death.
Where he was once a passionate and tender man, he became more and more secluded and ignorant to the people around him. Essex started to intensify his work and theories about evolution to cope with the pain of this loss, ignoring his (again pregnant) wife as a result. Disaster struck when their son died, aged four, of various birth defects. Although he was genuinely passionate about his work, he also cared a great deal for his wife Rebecca Essex and their son. He was obsessed with Charles Darwin's Theory of Evolution. Nathaniel Essex was born in Victorian England during the 19th Century.