Doi Toshikatsu Doi Toshikatsu The adopted son of Doi Toshimasa, Toshikatsu is generally believed to be the biological son of Mizuno Nobumoto, though there are some who claim he was an illegitimate son of shōgun Tokugawa Ieyasu. He served the shogunate as advisor to shōgun Tokugawa Hidetada for many years, and played an important role in communicating and overseeing the enforcement of shogunal policy across the country; Doi also helped effect trade and diplomatic relations between Japan and the Thai Kingdom of Ayutthaya. He lost much of his influence and power upon Hidetada's death in 1632. Six years later, Doi became one
Doi Luang National Park District, should not be confused with Doi Luang, with an altitude of 1,694 m the highest mountain of the Phi Pan Nam Range, that is located about 30 km further south in the same mountain chain. The sources of the Wang and the Lao River are in this mountainous area. The park also has rugged rock formations and scenic waterfalls such as Namtok Pu Kaeng, Namtok Cham Pa Thong and Namtok Wang Kaew. Trees in the protected area include "Mesua ferrea", "Hopea odorata", "Toona ciliata", "Lagerstroemia tomentosa" and "Irvingia malayana". Animals in the park area include the Asian black bear,