 However, Kiyotada died young, in 1603, at the age of nineteen.Thus, with the patronage of the shogunate behind them, the remaining brothers Kiyotsugu (1584-1622), Michizumi, and Nobumune took over the Chaya family business, worked to monopolize the trade in raw silk, and served as official suppliers of a variety of goods to the shogunate.Kiyotsugu was assigned by Ieyasu to help oversee shogunal operations at the formal trading post in Nagasaki, where he could keep an eye on the foreign traders and Christian missionaries, while working to his own commercial benefit as well.