Italian dramatist and actor Dario Fo, recipient of the 1997 Nobel Prize in Literature, has died on Thursday at age 90. He had been hospitalized for around two weeks and his condition worsened in the last few hours. Actor, dramatist, theatre director and writer, Fo received the Nobel Prize in Literature in 1997 as he was a man "who emulates the jesters of the Middle Ages in scourging authority and upholding the dignity of the downtrodden". His most famous work is 'Mistero Buffo' ('Comical mystery'), that was performed for the first time in 1969, and in which Fo recited in grammelot, a theatrical language inspired to ministrel improvisation and made up by sounds that imitate the rhythm and the tone of an actual language, with satirical intents. In the case of 'Mistero Buffo', this language was based on a mix of several dialects spoken in the Po Valley. Fo spent his professional and private life with her colleague Franca Rame, who he married in 1954. The couple spent their lives together and their union was broken up only by Rame's death in 2013. Fo and Rame had a son, Jacopo, who was born in 1955.