The Capetians were a royal family that ruled France for over 800 years, starting in the late 10th century. They are known for establishing a strong monarchy and expanding their territory. The first Capetian king, Hugh Capet, was crowned in 987, marking the beginning of a dynasty that would include famous rulers like Louis IX and Philip II. This dynasty played a crucial role in shaping modern France, as they centralized power and strengthened the kingdom. The Capetians also laid the groundwork for future royal families, including the Valois and Bourbon dynasties, which continued to influence French history.