Historical clue formulations

• Repeated cry from Richard III, in Shakespeare — 2019-08-14
• Mounted — 2017-10-07
• When repeated, a plea of Richard III — 2014-03-02
• What Richard III offered "my kingdom" for — 2011-05-06
• When repeated, cry by Shakespeare's Richard III — 2007-10-08
• Riding — 2006-05-11
• Quip, part 2 — 2005-07-27
• Ponied up? — 2005-04-22
• What Richard III offered "my kingdom" for — 2002-04-15
• Riding — 2000-05-25
• Ponied up? — 1999-01-15
• What Richard III offered "my kingdom" for — 1998-02-03
• Exchange for "my kingdom" — 1996-11-07