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In page Gerolama Orsini:

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Born in Pitigliano,[1] she was the daughter of Ludovico Orsini, Count of Pitigliano, and Giulia Conti. In 1513, an engagement contract between Orsini and Pier Luigi Farnese was drawn up, and in 1519 the wedding was celebrated at Valentano.[citation needed] Her husband was the illegitimate son of Pope Paul III and Silvia Ruffino.[2] The couple had five children, three of whom would have further progeny.