A. E. Waite
In 1899, Machen's wife Amy died of cancer after a long period of illness. This had a devastating effect on Machen. He only gradually recovered from his loss over the next year, partially through his close friendship with A. E. Waite. It was through Waite's influence that Machen joined at this time the Hermetic Order of the Golden Dawn, though Machen's interest in the organization was not lasting or very deep.