Historical clue formulations

• 2000s music star who writes his name with four dots — 2020-06-05
• British royal — 2019-07-25
• Royal Charlotte's father — 2019-01-27
• Member of the British royal family — 2018-01-25
• Leader at the Battle of Hastings — 2015-03-20
• Prince who married Kate Middleton — 2012-05-08
• With 41-Across, director of "Wings" (born 2/29/1896) — 1996-02-29
• Guglielmo, in America — 1995-01-05