Duke, 30 legions
Rank and legion count as the 1904 edition gives them. The legions come from the phrase that closes almost every entry; the rank comes from the book's own appendix, which classifies all seventy-two and states the metal each rank's seal is to be made in — copper for this one. The entries use rank words descriptively as well — Eligos appears 'in the form of a goodly Knight' and Barbatos comes 'with four noble Kings' — so a rank harvested from the prose would invent titles the book does not give. Only the appendix classifies.
Sources (1)
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Lemegeton
, The Goetia: The Lesser Key of Solomon the King
— The Goetia, spirit 41
“The Forty-first Spirit is Focalor, or Forcalor, or Furcalor. He is a Mighty Duke and Strong. He appeareth in the Form of a Man with Gryphon’s Wings. His office is to slay Men, and to drown them in the Waters, and to overthrow Ships of War, for he hath Power over both Winds and Seas; but he will not hurt any man or thing if he be commanded to the contrary by the Exorcist. He also hath hopes to return to the Seventh Throne after 1,000 years. He governeth 30 Legions of Spirits, and his Seal is this, etc.”
Verbatim, cut from the 1904 text by script/extract_goetia.rb. Mathers' spelling and capitalisation are left exactly as printed.