Carol I of Romania - Wikipedia
Carol I King of Romania-Carol I (20 April 1839 – 27 September (O.S.) / 10 October (N.S.) 1914), born Prince Karl of Hohenzollern-Sigmaringen was the ruler of Romania from 1866 to 1914. He was elected Ruling Prince (Domnitor) of the Romanian United Principalities on 20 April 1866 after the overthrow of Alexandru Ioan Cuza by a palace coup.