1 article for "Heydon"

(18th century) English astrologer.

Lived in London. He taught a system of rectifying the estimated time of birth using a Prenatal Epoch scheme which he called The Truitine of Hermes, named for the mythical Greek philosopher, Hermes Trismegistos (Hermes Trismegestus). Whether Heydon rules were secured from ancient sources, or were of his own invention, has not been determined. But, all known schemes derive from Heydon's rules.

See also:
♦ Rectification ♦ Animodar ♦ Hermes Trismegistus