A sonnet is a poetic form which originated in the Italian poetry composed at the Court of the Holy Roman Emperor Frederick II in Palermo, Sicily. The 13th-century poet and notary Giacomo da Lentini is credited with the sonnet's invention for expressing courtly love. The Sicilian School of poets who surrounded him at the Emperor's Court are credited with its spread. The earliest sonnets, however, no longer survive in the original Sicilian language, but only after being translated into Tuscan dialect.