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A team of scientists has reconstructed in glorious detail the faces of two sons of Saint Ludmila who left an indelible mark on Czech history: Spytihněv I, founder of Prague Castle, and Vratislav I, father of “good king Wenceslas”. Using state-of-the-art technology, the team have even determined the eye and hair colour of the two dukes from the Přemyslid dynasty, more than a thousand years after their deaths.