If you check Wikipedia death notices, you will see that someone that you’ve heard of dies every few days. That said, I’ve seen some interesting coincidences: Two Olympic champions from the same year, on the same team around 1950 died on the same day! Two members of the Jefferson Airplane also died on the same day, Paul Kantner and original female vocalist, Signe Anderson(from Portland), who left and was replaced by Grace Slick. They were both 74. All of these pale by comparison to the fact that both Thomas Jefferson and John Adams died on July 4th 1826, the 50th anniversary of the signing of the Declaration of Independence!