Madau district is named after "Mattau" which is one of four core Sirayan villages and figured heavily in the fomation of colonial policy on what historical island?
Madou District:  "Mattau" was one of the four core Sirayan villages during much of Taiwan's colonial history and figured heavily in the formation of colonial policy in Dutch Formosa. Dutch Formosa: The island of Taiwan, known historically as Formosa, was under colonial Dutch rule from 1624 to 1662.
Dutch Formosa