Hi, I haven't found a Joseph Iskowitz in our extended tree yet. Tell me a little more info about him if you know it. What was his Jewish name? What was his father's name? Could he have been from Yassy or Iasi in Romania? Did he have siblings? What were their children's names? Iskowitz was a common name from Romania, but it's possible there may be a link somewhere.
Can you send a pic of his headstone as an attachment here?
Thanks,
rifka60