The House of Grimaldi is a royal family that has ruled the Principality of Monaco since the 13th century. Founded by François Grimaldi, who disguised himself as a monk to capture the fortress of Monaco, the family has maintained its sovereignty through various political alliances and marriages. Today, the Grimaldi family is known for its modern contributions to Monaco, including tourism and cultural events. The current head is Prince Albert II, who succeeded his father, Prince Rainier III, in 2005. The family continues to play a significant role in the governance and development of Monaco.