Nicholas Winton was a British humanitarian who played a crucial role in saving the lives of 669 children, most of them Jewish, from Nazi-occupied Czechoslovakia during the eve of World War II.

The Wikipedia page for "Righteous Among the Nations" provides information on the prestigious honorific title awarded by Yad Vashem, the Holocaust Martyrs' and Heroes' Remembrance Authority in Israel.

The Holocaust was a period of genocide that occurred during World War II, where approximately six million Jews were systematically murdered by the Nazi regime and its collaborators.

Yad Vashem is a memorial and museum in Jerusalem, Israel, dedicated to the six million Jews who were killed during the Holocaust.