Yisrael Kristal Kristal was born in 1903 to a religiously observant Jewish family in what is now part of Poland. His first wife and two children were murdered in the Holocaust. He survived Auschwitz and other death camps, remarried, made Aliyah, and had more children.
http://www.jns.org/news-briefs/2016/1/22/israeli-auschwitz-survivor-oldest-man-in-the-world-at-112