Thomas M. Stein nació el 28 de febrero de 1949 en Stuttgart, Alemania. Está casado con Cornelia ? desde julio de 2007. Ha estado casado con Margret ? y Waltraud ?.
His first wife Waltraud died on November 13th, 2005 from pancreas cancer. They got one daughter together, Alana (19 years old at this time). On December 28th, 2005, his second wife Margret died from cancer.