Image by Steve Woods
Here are all the facts, experiences, techniques and media/links we have on:

Marquis de Sade

With contributions by black moon. - Thanks!

What Wikipedia has to say:  Donatien Alphonse Fran├žois de Sade, best known as the Marquis de Sade" was a French Aristocrat, revolutionary and author of philosophical sadomasochistic novels exploring such controversial subjects as rape, bestiality, necrophilia. He was a philosopher of extreme freedom, unrestrained by morality,religion, law, with the pursuit of personal pleasure as its foremost principle. Sade was incarcerated in various prisons and in an insane asylum for about 32 years of his life, during which much of his writing was done.  The term "sadism" is named after him.