The English name Charles comes directly from the French version of the name, Charles, which is itself their form of the late Latin Carolus. In German the name is Karl, which gives the Romanian form Carol. Romania had two kings of Germanic origin, King Carol I (+ 1914) and King Carol II (+ 1953). Now, according to some there is King Carol III. There is just one thing: he is not the King of Romania, but the King of England, or rather of the UK and the Commonwealth.
King Charles III has long been a lover of Romania, and owns property there. As one who has always been interested in the Orthodox Faith, makes pilgrimages to Mt Athos every year, making a generous donation to the Serbian Monastery of Hilandari after a fire there in 2004, and converses with Orthodox clergy. Years ago the now Metr Tikhon (Shevkunov) of Pskov assured me that the then Prince Charles had been received into the Orthodox Church. Indeed, rumour has it that he had been received into the Orthodox Church by a well-known Romanian Orthodox priest. Any search of the internet will confirm this, for example, https://www.msn.com/en-xl/news/other/prince-charles-a-romania-aficionado-becomes-king-of-the-united-kingdom-after-queen-elizabeth-ii-e2-80-99s-death/ar-AA11CmGb. An internet search also reveals a photograph of Prince Charles together with our His Beatitude, Patriarch Daniel, and making the Orthodox sign of the cross.
and several photos of him with our dear Metropolitan Joseph of Western and Southern Europe.