Frater Yechidah is the author of Enochian Magic in Theory and Enochian Magic in Practice.

He blogs about esoteric subjects, including the Golden Dawn (to which W.B. Yeats was a member), at Mishkan ha-Echad: http://mishkan-ha-echad.blogspot.com

He is an active member of the Dublin Temple of the Ancient and Honourable Order of the Golden Dawn, Ireland.