https://jewishencyclopedia.com/articles/8802-josel-joselmann-joselin-of-rosheim-joseph-ben-gershon-loanz
JOSEL (JOSELMANN, JOSELIN) OF ROSHEIM (JOSEPH BEN GERSHON LOANZ) - JewishEncyclopedia.com
Complete contents the 1906 Jewish Encyclopedia.
joseph ben gershon loanzjoselinrosheim