Historical clue formulations

• Ancestral ruler — 2019-04-16
• Hereditary ruler — 2019-03-30
• Kim Jong-un, for one — 2016-08-19
• One in a powerful house — 2012-04-21
• King or queen — 2011-10-23
• Kim Jong-il, for one — 2010-11-21
• Potentate — 2007-11-02
• Hereditary ruler — 2006-10-10
• Ruler by birth — 2004-05-17
• Czar or shah — 2003-06-28
• Potentate — 2002-08-09
• Powerful figure — 2002-05-10
• Hereditary ruler — 2001-05-16
• Hereditary ruler — 1998-05-10