Historical clue formulations

• Actor John of "Problem Child" — 2018-02-12
• John of old sitcoms — 2015-10-16
• "Three's Company" co-star — 1998-12-13
• Singing cowboy Tex — 1998-06-09
• "Skin Deep" star — 1997-01-24
• Singer of the "High Noon" theme — 1996-12-13