I'm compiling a list of these as they might come in handy when developing other parts of the world:

Hel: Known to the Blackmoorians as Hella
Ixion: Known to the Blackmoorians as Pacuun or Sollus
Korotiku: Known to the Blackmoorians as Hersh
Odin: Known to the Blackmoorians as Odir
Pax: Patron of Peace
Protius: Known to the Blackmoorians as Mwajin
Skuld, Urd and Verthandi: The Three Crones
the Four Elemasters: Lords of the Elements
Thanatos: Worshipped in Blackmoor under that name
Tyche: Known to Blackmoorians as Sachwynne
Valerias: Known to Blackmoorians as Phellia
Zugzul:Worshipped in Blackmoor under that name
Arik: Known to the Blackmoorians as Volketh
Terra:Worshipped in Blackmoor under that name
N'grath: Evil Patron of Earth Elementals
Great One: Known as the Father of Insellageth.
Simurgh: Patron of winged creatures
Ordana: Worshipped in Blackmoor under that name
Ssu-Ma: Known to Blackmoorians as Yoosuf
Ka: Known to Blackmoorians as Fronaus
Luca: Patroness of Jelly Ochres
Demogorgon: Known to Blackmoorians as Tyrhm
Faunus: Worshipped in Blackmoor under that name
Fugit: Known to Blackmoorians as Temrin.
Bastet: Patroness of Catfolk
Ninfangle: Patron of Catfolk
Kagyar: Known to Blackmoorians as Hemgrid
Zalaj: Patron of Cloud Giants
Gorrziok: Patron of Sea Giants
Khoronus: Worshipped in Blackmoor under that name
Aracne Prime: Patron of Spider-like races.
Nyx: Patroness of Undead
Stodos: Known to Blackmoorians as B’rr’bt
Land: Patron of Earth
Guidarezzo: Known to Blackmoorians as Baldrin
Ninsun: Patroness of Fertility and Magic
Garal Glitterlode: Known to Blackmoorians as Mieroc
Utnapishtim: Known to Blackmoorians as Henrin


-Havard