You all made me go read up history a bit. This is what I compile for the last dynasty Qing 1644-1911AD ( starting from the last emperor backwards)
Xuan Tong (PuYi) - Died 61 ( Cancer )
Guan Xu - Died 37 ( Suspect poisoned by CIXi)
Tong Zhi - Died 18 ( Small Pox )
Xian Feng - Died 30 ( No reliable source)
Dao Guang - Died 67 ( No reliable, most probably old age/illness )
Jia Qing - Died 59 ( some say maybe strike by lightning / obesesity related illness)
Qian Long - Died 87 (Most likely old age)
Yong Zheng - Died 56 ( some say maybe assassinated / overdoes of life prolong drug)
Kang Xi - Died 58 ( no reliable source, should be natural)
Shun Zi - Died 22 ( Small Pox )
Huang Taiji - Died 50 ( Stroke )
Taizu Emperor - Died 67 ( injured by cannon and died 2 days later)
Seems not many really died cause of xxx. Haven't find out about earlier dynasty though
