The reign of the Shunzhi Emperor ended when he died of smallpox in 1661 at the age of 22. His last will—which was tampered and perhaps even forged by its beneficiaries—appointed four co-regents for his son and successor the six-year-old Xuanye, who was to reign as the Kangxi Emperor. All four were Manchu dignitaries who had supported the Shunzhi Emperor after the death of Dorgon, but their Manchu nativist measures reversed many of the Shunzhi Emperor's own policies. The "Oboi regency", named after the most powerful of the four regents, lasted until 1669, when the Kangxi Emperor started his personal rule.