the object of competition among aristocratic families. The 10th Penlop of Trongsa Jigme Namgyel (r. 1853–1870) began consolidating power, paving the way for his son the 12th Penlop of Trongsa (and 21st Penlop of Paro) Ugyen Wangchuck to prevail in battle against all rival penlops and establish the monarchy in 1907. With the establishment of the monarchy and consolidation of power, the traditional roles of provinces, their rulers, and the dual system of government came to an end. See also Penlop Dzongpen House of Wangchuck Districts of Bhutan History of Bhutan Dual system of government References