Encyclopedia entry for "Mormons" in 1864 states that Godhead is based on "Buddhistic principles" and Adam is part of the Godhead; Adam is the "God" of Jesus in LDS theology.
Chambers's Encyclopaedia A Dictionary of Universal Knowledge for the People (London: W. and R. Chambers, 1864), 6:572
Doctrine.—The Saints are almost incredibly materialistic in their doctrines. Their Godhead is formed on Buddhistic principles. While professing to believe in the Trinity, they explain that God was once a man, who has, however, so advanced in intelligence and power that he may now be called (comparatively speaking) perfect, infinite, &c., but that he has still the form and figure of a man; he has even 'legs,' as is evident (according to Mr. Pratt, an eminent Mormon) from his appearance to Abraham; though he has this advantage over his creature, that 'he can move up or down through the air without using them.' Christ is the offspring of the 'material' union, on the plains of Palestine, of God and the Virgin Mary—the latter being duly married after betrothal by the angel Gabriel. yet he is believed to have had a previous existence, to have even made the universe out of 'unformed chaotic matter as old as God,' and his worship is enjoined as Lord of all. The Paraclete is vaguely described, but is also material. It would appear, however, that there is an older Trinity, that of 'Elohim, Jehovah, and Michael, which is Adam.' Adam, again, is declared to be the 'god' of Jesus Christ; . . .