John Dee

Born in 1527 in London to the family of a rich businessman. He studied mathematics and astronomy on the Paris and Cambridge universities, then extensively travelled, acquainting himself with alchemy and magic on his trips around Europe. He served as the astronomer and mathematician at the court of the English Queen Elizabeth who in 1583 entrusted him with a secret diplomatic mission at the emperor Rudolf II\'s court in Prague. Dee came to Prague with Edward Kelley. After losing favour in Prague, he came to the service of Wilhelm von Rosenberg. He lived most of his time at Třeboň castle, until in 1589 he left the service of Wilhelm and returned back to England.

(mj)