Historical clue formulations

• Rock's Jethro ___ — 2022-11-27
• Rock's Jethro ___ — 2018-01-08
• Rock's Jethro ___ — 2017-07-12
• Jethro ___ — 2013-06-04
• Rock's Jethro ___ — 2011-12-25
• Pioneering agriculturist Jethro — 2008-06-21
• English agriculturist and inventor — 2006-11-25
• 1960's-80's rock group Jethro ___ — 2005-12-26
• "As I Lay Dying" family name — 2004-01-02