William the Lion was a King of Scotland who reigned from 1165 to 1214. He was known for his efforts to expand and consolidate the kingdom of Scotland, and he played a significant role in the country's history. William the Lion also had a reputation for being a strong and determined ruler, and he was involved in various conflicts and alliances with other European powers during his reign. His legacy is remembered as a key figure in the development of Scotland as a nation.