William Lilly

William Lilly, astrologer 1602-1681, "from an original picture in the Asholean Museum, Oxford". "William Lilly was the foremost English astrologer of the 17th century. Born May 1, 1602 in Diseworth, Leicestershire, he began studying astrology in 1632. In 1641 he began a professional practice and soon became heavily involved with the Parliamentary side in the English Civil War. It was said that if King Charles I could have brought over Lilly he would have been worth a half a dozen regiments. Lilly published many astrological almanacs and in 1647 wrote Christian Astrology, the most definitive work on horary astrology ever written in English. He is perhaps most famous for predicting the Great Fire of London in 1666.
After the Restoration, Lilly was repeatedly investigated as a Parliamentary supporter, but managed to escape any serious consequences. He continued his thriving astrological practice and died on June 9, 1681." - http://www.renaissanceastrology.com/lilly.html