His name was Maximilian Kolbe, and he died voluntarily of starvation, in place of another prisoner at Auschwitz. Things like that happen to people who volunteer to serve, in this case the Christians’ God. He is now a saint in the Catholic Church.
Another saint who volunteered is St. Edith Stein. She was a Jewish intellectual who became a Carmelite nun, and the Nazis hunted her down and killed her. So, it is risky to do good for the Lord, as we say, but the rewards before and after are way beyond what we dream.
These are almost anonymous saints in the minds of the humble faithful, but they attest to what millions believe. There is a divine consensus; we just don’t know about it yet.