Saint Sava was a Serbian Prince and Orthodox monk, the first Archbishop of the autocephalous Serbian Church, the founder of Serbian law and literature, and a diplomat. He became a monk in his youth, receiving the monastic name Sava (Sabbas), subsequently founding the monasteries of Hilandar on Mount Athos, and Žiča. In 1219 he was recognized as the first Archbishop of Serbs, by the Patriarch of Constantinople, and in the same year he authored the oldest known constitution of Serbia, Zakonopravilo, thus securing full independence; both religious and political.