January 3
On January 3, 2015, Edward Brooke died.
Edward Brooke was the first African American elected to the U.S. Senate by popular vote.
Sources
Wilson, M. R. (2015, January 4). Edward Brooke, First African American elected to Senate, dies at 95. The Hill. https://thehill.com/blogs/blog-briefing-room/news/228420-former-senator-edward-brooke-first-black-popularly-elected-to/