I saw a post on Facebook today about Sir Nicholas Winton. If you are not familiar with him, he helped rescue 669 children, mostly Jews, from Czechoslovakia shortly before World War II broke out. You can learn more about him at
https://www.jewishvirtuallibrary.org/nicholas-winton, among many other websites. He was part of https://en.wikipedia.org/wiki/Kindertransport.
He died in 2015 at the age of 106. You can visit his memorial on Find-A-Grave: https://www.findagrave.com/memorial/148511249/nicholas-george-winton. Not on BillionGraves yet, but the cemetery can be found at https://billiongraves.com/cemetery/Maidenhead-Braywick-Cemetery/169548.