Late to the party again . . .

Newberry Library, Chicago: Case MS. 5017, "Book of Magical Charms."

Early 17th-century magical miscellany in English and Latin.  Includes Heptameron extracts, Vinculum Salomonis (radically different from the Heptameron / Lucidarium version) spirit characters and names.  In 2017 the main scribe was identified, by Ranae Slatterley of the Middle Temple Library in London, as being English lawyer Robert Ashley (1565-1641): this work thus pre-dates the Lemegeton and the major divisions of Sloane 3824.  On fol. 7r (image no. 17 at the link) is a variant form of the character of Andromalius (one letter is ambiguously written and the name could be Andromalcus or Andromaleus) as well as a character for Blethe who features in a process in Sloane 3824 fol. 114v.

Dammit, why didn't I find out about this when the transcription project was actually a thing?  To be fair, back then I probably didn't know Latin and English scribal abbreviations of the period any better than the random Wiccans and other non-specialists who did much of their transcribing.

As it happens, two years prior to the crowd-sourced transcription project being launched, someone in any case transcribed the entire thing as part of an M.A. thesis: not being familiar with the handwriting of early modern English lawyers, she concluded based on the contents that the compiler / scribe was a cunning-man from the east of England or East Midlands.

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The title Longobardus in Sloane MS. 3824 is probably a reference to "Robertus Longobardus," which name appears as a variant form of "Rupertus Lombardus" (also "Robert Lombard") as the imputed author of a late-mediæval magical text, the Thesaurus Spirituum (also ascribed to the 13th-century monk Roger Bacon).  See Klaassen, The Transformations of Magic, p. 234 note. 21.  It is possibly just one of them coincidence things that the first, middle and last letters of that name are the initials of certain "Spirits of great power L:B:S:" who are conjured without actually giving their names at length in one of the texts in that collection.

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When seeing repeated appeals in 17th-century magical texts for Angels to "appear in this CG" one has to remember that those initials meant something different back then.