abstract:Ottone, re di Germania (Otto, King of Germany; HWV 15) is an opera by George Frideric Handel, to an Italian–language libretto adapted by Nicola Francesco Haym from the libretto by Stefano Benedetto Pallavicino for Antonio Lotti's opera Teofane.McLauchlan, Fiona, "Lotti's Teofane (1719) and Handel's Ottone (1723): A Textual and Musical Study" (August 1997).