Historical clue formulations

• Pops — 2024-02-09
• Churchill portrayer in 2017's "Darkest Hour" — 2022-10-13
• Subject of a Hemingway title — 2009-08-04
• Appellation for winter — 2006-12-09
• Hemingway title character — 2002-04-01
• Dad, slangily — 2002-04-01
• Part of a Hemingway title — 1999-06-27