King Aethelstan was the first King of England, ruling from 924 to 939 AD. He was the grandson of Alfred the Great and played a crucial role in uniting various Anglo-Saxon kingdoms. Aethelstan is known for his military successes, particularly in battles against the Vikings, which helped to secure his reign and expand his territory. Aethelstan also promoted learning and culture, encouraging the use of the English language and supporting the church. His reign is often seen as a turning point in English history, laying the foundation for a more unified nation. He is remembered for his contributions to law and governance, as well as his efforts to strengthen the monarchy.