Desi Jigme Namgyal of Bhutan is a forefather of the Wangchuck Dynasty. He served as 48th Druk Desi of Bhutan (1870–1873), and held the hereditary post of 10th Penlop of Trongsa. He was called the Black Ruler.

The Wangchuck dynasty have held the hereditary position of Druk Gyalpo of Bhutan since 1907. Prior to reunification, the Wangchuck family had governed the district of Trongsa as descendants of Dungkar Choji. They eventually overpowered other regional lords and earned the favour of the British Empire. After consolidating power, the 12th Penlop of Trongsa Gongsar Ugyen Wangchuck was elected Druk Gyalpo, thus founding the dynasty. The position of Druk Gyalpo – who heads the royal family of Bhutan – is more commonly known in English as the King of Bhutan, however "Druk Gyalpo" would be translated literally as "Dragon King"