Which is a reference to a man who died trying to help others?

A notable reference is to Sir Nicholas Winton, who organized the rescue of 669 children, mostly Jewish, from Czechoslovakia before World War II. His efforts went largely unrecognized until many years later, and he passed away in 2015. Winton's selfless actions exemplify the ultimate sacrifice of trying to help others, even at great personal risk. His legacy continues to inspire humanitarian efforts worldwide.