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In page Roger II of Sicily:

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Roger is the subject of King Roger, a 1926 opera by Polish composer Karol Szymanowski. The last months of his life are also featured in Tariq Ali's book A Sultan in Palermo. Studiorum Universitas Ruggero II, a private non-traditional university connected to Accademia Normanna was incorporated in the U.S. on April 30, 2001 in honor of this king.[5]