The Jonas Unger who was born on April 14, 1843 in Hadásfalva/Hadušovce can not have been the husband and father as constructed here, because according to the birth register, the Jonas Unger, born on April 14, 1843, as the son of Abraham H. Unger and Schewa Breitbart died soon after his birth (see note in the register). There were many other Jonas Ungars, but this one died as a child.
