Historical clue formulations

• "Black Panther" composer Göransson, who shares his first name with another famous composer — 2023-12-19
• First name of this puzzle's dedicatee, born December 1770 — 2020-12-17
• Architect ___ Mies van der Rohe — 2014-09-10
• Philosopher Wittgenstein — 2007-09-30