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Orso Orsini

Orso Orsini, called Orsello, was the second Orsini lord of Monterotondo. A son of Matteo Orsini, signore of Marino, he is attested around 1312 and married a cousin. His son Giordano Orsini succeeded to the Monterotondo line and died in 1367.

References

  1. it.wikipedia.org/wiki/Tavole_genealogiche_della_famiglia_Orsini