Casanova, born in Venice, is most well known for his womanizing and his book The Story of My Life which gives the best account of life in the eighteenth century that we have.
Due to the financial support for many patrons of his mother (an actress) he was able to go to school to receive a very good education. This enabled him to become a lawyer.
Over many years his romantic affairs with women in power made him a very powerful man. He gained and lost riches at a rapid rate (in one case he lost the equivalent of over 1 million Euros in one night).
Between the years of 1774 and 1782, he worked as a spy for the Venetian Inquisitors of State.
It is not known what his role involved as his famous diary ended the year he began his work. In 1782 he was exiled from Venice for spreading libel against one of the City patricians.
After his exile he became a librarian and lived out his life in the service of the Chateaux of Dux in Bohemia.