Historical clue formulations

• Howard Cunningham, informally — 2014-09-25
• Richie's dad, to the Fonz — 1998-12-27
• "Happy Days" father, informally — 1997-11-30
• "Happy Days" dad, informally — 1996-05-17
• Richie's dad, to Fonzie — 1996-04-14
• Perry Como, affectionately — 1995-04-22