Costanza Farnese (19 December 1500 – 23 May 1545) was a daughter of Alessandro Farnese[1] and Silvia Ruffini.
[2] Born before her father became Pope Paul III, her siblings were Pier Luigi, Paul, Ranuccio and Lucrezia.
She married Bosio II Sforza,[1] count of Santa Fiora e Cotignola, they had: