Rabbi Isaac Itzek Esslingen of Bopfingen

He is mentioned in the book of Minhagim (Customs) of the Maharil (Machon Jerusalem ed. p. 184) regarding the death of his wife in 1505 (5264) on the first night of Sukkos, and the particulars of the funeral on the second day of Sukkos and mentioning which mourning customs are to be performed on the festival. (Quoted in LeMatte Moshe p. 151 by Rabbi Y L Rakow, London 2007).

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