Historical clue formulations

• "I yam what I yam" — 2022-07-13
• Sailor who's smitten by Olive Oyl — 2017-02-27
• Tattooed toon — 2015-04-12
• "I yam what I yam" speaker — 2005-03-08
• Bluto's rival — 2001-02-12
• Yam user? — 2000-12-21
• Jack Mercer supplied his voice — 1997-05-04