The sonnet was created by Giacomo da Lentini, head of the Sicilian School under Emperor Frederick II. Guittone d'Arezzo (c. 1235–1294) rediscovered it and brought it to Tuscany where he adapted it to his language when he founded the Siculo-Tuscan School, or Guittonian school of poetry (1235–1294). He wrote almost 250 sonnets. Other Italian poets of the time, including Dante Alighieri (1265–1321) and Guido Cavalcanti (c. 1250–1300), wrote sonnets, but the most famous early sonneteer was Petrarch. Other fine examples were written by Michelangelo.