Historical clue formulations

• Roy Rogers's real last name — 2014-12-21
• Leonard ___ a.k.a. Roy Rogers — 2014-04-20
• Roy Rogers's surname at birth — 2007-08-25
• Roy Rogers's original surname — 2003-11-07
• Roy Rogers's real surname — 2001-11-20
• Roy Rogers, né Leonard ___ — 1998-02-22
• Roy Rogers's real surname — 1997-07-13
• Roy Rogers a k a Leonard _____ — 1995-11-05
• Leonard _____, alias Roy Rogers — 1995-05-11
• Cowboy Rogers's real last name — 1995-03-27