About Milan I of Serbia
Milan Obrenović IV (Serbian Cyrillic: Милан Обреновић, romanized: Milan Obrenović; 22 August 1854 – 11 February 1901) reigned as the Prince of Serbia from 10 June 1868 until 1882, and then King of Serbia, a title he held until his abdication on 6 March 1889. Most important events during Milan's reign was the First and Second Serbian–Ottoman War and the Serbo-Bulgarian War. At the beginning of his reign, the Principality of Serbia was still de jure part of the Ottoman Empire, but became fully independent in 1878 with the Treaty of Berlin (1878). In 1882, the Principality was elevated to the status of a kingdom, and Milan became a king. Milan abdicated the throne in 1889 and left Serbia, after which his son, Alexander I, became the second King of Serbia. After a few years, Milan returned to Serbia and in 1897 his son appointed him the commander-in-chief of the Royal Serbian Army. Milan did not approve his son's marriage to Queen Draga, so he left Serbia again in 1900 and died in exile in 1901.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.