Стефан I, also known as Saint Stephen, was the first King of Hungary, reigning from 1000 to 1038. He is credited with establishing the Christian state of Hungary and played a crucial role in converting the nation to Christianity. His reign marked the beginning of the Hungarian monarchy and the consolidation of power in the region. Stephen was canonized as a saint by the Catholic Church due to his significant contributions to the spread of Christianity in Hungary. His feast day is celebrated on August 20, which is also a national holiday in Hungary, honoring his legacy and the foundation of the Hungarian state.