Princess Cheonmyeong, was a princess of Silla, one of the Three Kingdoms of Korea, and is notable as the sister of Queen Seondeok of Silla, and reigned as Silla's which number ruler?
Queen Seondeok of Silla Queen Seondeok of Silla (Hangul: 선덕여왕 ] ; 595~610 – 17 February 647) reigned as Queen Regnant of Silla, one of the Three Kingdoms of Korea, from 632 to 647. She was Silla's twenty-seventh ruler, and its first reigning queen. She was the second female sovereign in recorded East Asian history and encouraged a renaissance in thought, literature, and the arts in Silla.
Gwanghaegun of Joseon Gwanghae-gun or Prince Gwanghae (3 June 1575 – 7 August 1641; reigned 1608–1623) was the fifteenth king of the Joseon dynasty. His personal name was "Yi Hon". As he was deposed in a coup d'état, later official historians did not give him a temple name like Taejo or Sejong.