The Chakri dynasty, unofficially the House of Chakri, is the current reigning dynasty of the Kingdom of Thailand. The head of the house is the king, who is head of state. The family has ruled Thailand since the founding of the Rattanakosin era and the city of Bangkok in 1782; following the end of Taksin's reign, when the capital of Siam shifted to Bangkok. The royal house was founded by Rama I, an Ayutthaya military leader.