Ayutthaya and rebelled. Prasat Thong had Praya Chaiya poison him in 1630, and then expelled the remaining Japanese. End of relations between Siam and Japan Following Yamada's death in 1630, the new ruler and usurper king of Siam Prasat Thong (1630–1655) sent an army of 4,000 soldiers to destroy the Japanese settlement in Ayutthaya, but many Japanese managed to flee to the Khmer Kingdom. A few years later in 1633, returnees (300–400 Japanese) from Indochina were able to re-establish the Japanese settlement in Ayutthaya. From 1634, the shōgun, informed of these troubles and what he perceived as attacks on his authority, refused to issue further Red Seal ship permits for Siam. Desirous to renew trade, however, the king of Siam sent a trading ship and an embassy to Japan in 1636, but the embassies were rejected by the shogun, thus putting an end to direct relations between Japan and Siam. Japan was concomitantly closing itself to the world at that time, a period known as Sakoku. The Dutch took advantage of the Japanese withdrawal, increasing their trade and offering naval support. Japan lost influence for 300 years after being expelled by Prasat Thong. Memorial Yamada now rests in his hometown in the area of Otani. The remnants of the Japanese quarters in Ayutthuya are still visible to visitors, as well as a statue of Yamada in Siamese military uniform. Film adaptations of Yamada's life The Gaijin (山田長政 王者の剣) – 1959 Southern Cross: The Strange Tale of Cornelia Oyuki and Nagamasa Yamada (南十字星 コルネリアお雪異聞 わたしの山田長政) (TV movie) - 1978 Yamada: The Samurai of Ayothaya – 2010 See also Japan-Thailand relations References Further reading Red Seal Ships. Nagazumi Yoko, Japanese (朱印船、永積洋子) . Samurai of Ayutthaya: Yamada Nagamasa, Japanese Warrior and Merchant in Early 17th Century Siam. Cesare Polenghi, Lotus Press, 2009, 1590 births 1630 deaths Deaths by poisoning Japanese expatriates in the Ayutthaya Kingdom History of the foreign relations of Japan Japanese explorers People from Numazu, Shizuoka Japan–Thailand relations Nobility of the Ayutthaya Kingdom