Eligos

Goetia - S. L. MacGregor Mathers (1904) 

The Fifteenth Spirit in Order is Eligos, a Great Duke, and appeareth in the form of a goodly Knight, carrying a Lance, an Ensign, and a Serpent. He discovereth hidden things, and knoweth things to come; and of Wars, and how the Soldiers will or shall meet. He causeth the Love of Lords and Great Persons. He governeth 60 Legions of Spirits. His Seal is this, etc.

Pseudomonarchia daemonum - Johann Wier (1583) 

Eligor, alias Abigor, is a great duke, and appeereth as a goodlie [handsome] knight, carrieng a lance, an ensigne, and a scepter: he answereth fullie of things hidden, and of warres, and how souldiers should meete: he knoweth things to come, and procureth the favour of lords and knights, governing sixtie legions of divels.

Dictionnaire Infernal - Collin de Plancy (1863) 

Abigor presents himself as a horseman carrying a lance, a standard, or a scepter. He commands sixty legions & is a grand duke of hell. He knows of the secrets of warfare, of the future, and can instruct leaders of the ways to earn their soldiers' respect.