Morosini was elected doge late in life, at the age of 68. At the time of his election, Morosini was the Procurator of Saint Mark's Basilica. During his political career, Morosini also held the position of Duke of Crete. He was married but did not have any children.
His four-year tenure as doge was a time of peace for Venice, although during this period, Louis IX of France led a crusade against Egypt. Not wanting to jeopardize its trade agreement with the sultan, Venice chose not to participate in the crusade.
Morosini sought to improve relations with the Vatican by making the concession to accept the establishment of a court of inquisition in Venice, but retained the right to appoint the judges. Nevertheless, tensions remained high between Rome and Venice.
Upon his death on 1 January 1253, Marino Morosini was interred in the atrium of Saint Mark's Basilica.[1][2]
Literature
Claudio Rendina: I dogi. Storia e segreti. Rome 1984. ISBN88-8289-656-0
References
^Patricia Fortini Brown, Venice & Antiquity: The Venetian Sense of the Past (books.google.de), p. 23