Glückel of Hameln (also spelled Gluckel or Glikl of Hamelin; also known as Glikl bas Judah Leib) (1646, Hamburg – September 19, 1724, Metz) was a Jewish businesswoman and diarist, whose account of life provides scholars with an intimate picture of German Jewish communal life in the late-17th-early eighteenth century Jewish ghetto. It was a time of transition from the authority and autonomy of the Medieval kehilla, toward a more modern ethos in which membership in the community was voluntary and Jewish identity far more personal and existential; a time historian Jacob Katz has defined as 'tradition and crisis',in his 1961 book by that name.. Written in Yiddish, her diaries were originally intended for her descendants. The first part is actually a living will urging them to live ethical lives. It was only much later that historians discovered the diaries and began to appreciate her account of life at that time.