Complex sentence: John Pordage (1607-1681), Anglican priest, astrologer, alchemist and Christian mystic who founded the 17th century English Behmenist group which would later become known as the Philadelphian Society when it was led by his disciple and successor, Jane Leade.
Split into simpler sentences: John Pordage (1607-1681) was an Anglican priest, astrologer, alchemist and Christian mystic. He founded the 17th century English Behmenist group which would later become known as the Philadelphian Society when it was led by his disciple and successor, Jane Leade.