Boris III of Bulgaria (born 1894)

Boris III, originally Boris Klemens Robert Maria Pius Ludwig Stanislaus Xaver, officially His Majesty Boris III, by the grace of God and the will of the people, King of the Bulgarians, Prince of Saxe-Coburg-Gotha and Duke of Saxony, was the Tsar of the Kingdom of Bulgaria from 1918 until his death in 1943.