1.- HIs birth year date in HBF 37 im 28 http://www.badatelna.eu/fond/2098/reprodukce/?zaznamId=401558&r... is 1809
2.- His birth date in Geni is 06.06.1809 but it is also Anna Jerusalem's birth date in Geni (given in HBMa 402 im 11 http://www.badatelna.eu/fond/1073/reprodukce/?zaznamId=535&repr...)
3.-His birth date seems to be 29/08/1809 (given in HBMa 212 im 7 http://www.badatelna.eu/fond/1073/reprodukce/?zaznamId=273&repr...)
but Anna and Isak birth date are too near !
