Angels - E

Ecanus = Patron to the Order of Redeemers, Ecanus is a bit of a mystery in the field of Angelology but it is believed he had a had in writing the Books of Madness. He may even have been its original author, although the Order of Gnostics vehemently claim that it was a Primordial and not a Celestial responsible for the series of mind-shattering tomes. 
Eight Heaven = Heaven is said to be divided into several main sections, each one of them afforded a number. The Eighth Heaven is believed to be the place in Heaven prescribed for the mortal members of the Order of Archangels. 
Elders = In the Book of Revelations, there are 24 'Elders' in Heaven who help St. John receive news about the coming apocalypse. 
Elimelech = A Ruling Angel, associated with the Order of Kings. Probably a Warrior Angel. 
Eloa = A Celestial said to have been created from a tear that dropped from Jesus' cheek during His passion. 
Encounters With Angels = See Encounters With Angels. 
Enochian = A language of the Celestials, Enochian is a complex language and not easily learned by humans. It is unheard of outside the Order of Archangels, although the Order of Infernalists are said to have gleaned some of it.
Book of Enoch = The Book of Enoch is an ancient text detailing important stories about mankind's interactions with Angels, as well as the history of the Angels themselves. For more info see Book of Enoch (external link).
Estiel = The 'Wax Angel,' he is a servant of Metatron and often works away pouring over countless tomes in lairs built of wax accumulated over centuries of reading by candlelight. 
Ethnarchs = Angels in charge of entire nations or people groups. St. Michael is said to be the Ethnarch of God's chosen people (usually interpreted to mean the Jews). 
Exterminatis = A dire Black Ritual, more myth than anything, that is said to have the power to undo the creation of an Angel and return them to the primordial nothingness from which they came. Traditional Adepts discount such tales as either myth-making or enemy propaganda. 
Exrael = The Angel of Wrath, a fierce warrior and committed enemy.