Joanna Southcott (1750-1814), a domestic servant and daughter of a Devon farmer, claimed to be a prophet. At 64, she even announced she would give birth to the Messiah. When she died, two months after the Messiah failed to appear, she left behind a sealed box of prophecies and over 100,000 followers, calling themselves Southcottians.
One of her prophecies was that the Day of Judgement would come in 2004.
The Panacea Society: Joanna Southcott