Ascension
As the eldest surviving legitimate son of Buddha Yodfa Chulaloke, Prince Isarasundhorn succeeded to throne when Buddha Yotfa Chulaloke died in 1809. No royal naming system was established at the time Rama II was crowned. He was later named by his son Jessadabodindra as Buddha Loetla Nabhalai and by the Rama convention, called Rama II. His consort, Princess Bunrod, was raised to Queen Sri Suriyendra.
As soon as Buddha Loetla Nabhalai ascended the throne, Prince Kshatranichit, the surviving son of Taksin, rebelled as pretender to the throne. Buddha Loetla Nabhalai's son, Prince Tub effectively crushed the rebellion, proving himself to be competent, thus gaining his father's favor. Prince Tub was raised to Krom Muen, given the Sanskrit-derived name "Jessadabodindra," and made Krom Tha (minister of trade and foreign Affair.)
King Bodawpaya of Burma, seeing that Buddha Yodfa Chulaloke was dead, marched an army into Chumporn and conquered Thalang (Phuket) in the same year. Buddha Loetla Nabhalai sent his brother Maha Senanurak the Front Palace to recapture Thalang, which had been razed to the ground. This "Thalang campaign" was the last invasion by the Burmese into Siamese territory.
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