Is this here death record? Age 80 in 1847, so born 1767.
http://badatelna.eu/fond/241/reprodukce/?zaznamId=375786&reproI...
It says widow of Nathan Jakob Koretz but that doesn't make sense.
Jakob Nathan Koretz is born 1800. Jakob Koretz
There is also Elisabeth wife of Abraham Koretz d. 3 Nov 1834, age 82
http://badatelna.eu/fond/241/reprodukce/?zaznamId=375786&reproI... Here is a Jakob Nathan Koretz who died in 1829 at 69 1/2 if I am reading it right, so he would have been born in 1760.