The demon Allocer appears in the grimoires Book of Incantations, The Discoverie of Witchcraft, The Book of the Office of Spirits, The Book of Oberon, Pseudomonarchia Daemonum, The Lesser Key of Solomon, and Dictionnaire Infernal
From The Lesser Key of Solomon, Crowley/Mathers edition:
Allocer
The Fifty-second Spirit is Alloces, or Alocas. He is a Duke, Great, Mighty, and Strong, appearing in the form of a Solider 1 riding upon a Great Horse. His Face is like that of a Lion, very Red and having Flaming Eyes. His Speech is hoarse and very big. 2 His Office is to teach the Art of Astronomy, and all the Liberal Sciences. He bringeth unto thee Good Familiars; also he ruleth over 36 Legions of Spirits. His Seal is this, which, etc.
Timeline of related events
1500
1700
1800
1810
In this decade: Book of Incantations written (lists this demon)
1818
Publication of Dictionnaire Infernal (lists this demon)