Ferdinand I of Romania

Ferdinand I was King of Romania fromOctober 1914 until his death in 1927.

Following the renunciations, first of his father in 1880 and then of his elder brother Prince Wilhelm of HohenzollernSigmaringen in 1886, young Ferdinand became the heirpresumptive to the throne of his childless uncle, King Carol I of Romania, who would reign until his death in October 1914. In 1889, the Romanian parliament recognized Ferdinand as a prince of Romania. The Romanian government did not require his conversion to Eastern Orthodoxy from Catholicism, as was the common practice prior to this date, thus allowing him to continue with his born creed, but it was required that his children be raised Orthodox, then the state religion of Romania. For agreeing to this, Ferdinand was excommunicated from the Catholic Church, although this was later lifted.

Source: Wikipedia