Baker and Kultusbeamter.

The Pless family records identify Isaac as a son of Mendel and note that the family is in Lendzin. The record of his marriage to Charlotte cite both of these facts and give his age as 24 years which is consistent with his date of birth.

The record of his marriage to Handel, two years after Charlotte's death, gives his age as 26 years, which is consistent to within a year with his date of birth. This cites both Pless and Lendzin in connection with Isaac.