Complex sentence: Jane Leade (1624-1704) was a Christian Mystic born in Norfolk, England, whose spiritual visions, recorded in a series of publications, were central in the founding and philosophy of the Philadelphia Society in London at the time.
Split into simpler sentences: Jane Leade (1624-1704) was a Christian Mystic born in Norfolk, England. Her spiritual visions, recorded in a series of publications, were central in the founding and philosophy of the Philadelphia Society in London at the time.