Wenceslaus I of Bohemia, also known as Saint Wenceslaus, was a Duke of Bohemia who ruled from 921 until his assassination in 935. He is remembered for his efforts to promote Christianity in the region and for his role in unifying the Czech lands. His reign was marked by conflicts with pagan nobles and external threats, particularly from the German Empire. Wenceslaus was born around 907 and became a symbol of Czech national identity. After his death, he was venerated as a saint and martyr, and his feast day is celebrated on September 28. His legacy continues to influence Czech culture and history, making him a significant figure in Czech history.