The use of royal seals continued in the first four reigns of the Rattanakosin Kingdom (founded in 1782). The Chakri kings would use a personal seal for private letters and four official seals for government business. The four great royal seals (พระราชลัญจกร, Phra Ratcha Lanchakon) included: the Maha Ongkan (มหาโองการ), the Khrut Pha (ครุฑพ่าห์), the Hongsaphiman (หงสพิมาน) and the Airaphot (ไอราพต) seals. The seals represented four gods: Shiva (known in Thailand as Phra Isuan), Vishnu (Phra Narai), Brahma (Phra Phrom) and Indra (Phra In). The first three belong strictly to the Hindu Trimurti (or Trinity) and the last is a popular king of the gods in Buddhism.