The South Africa angle is interesting but imposible for me to trace. My grandmother's brother, Andrew Vrettos, went to medical school in Chicago then apparently left the USA sometime after that to live with his sister in South Africa. He tried a couple of times, according to Ellis Island records, to get back into the USA but was denied both times. Have tried to find anything on his sister in South Africa, using her married name I got from the immigration records but I can't find anything. All I know for sure his that my grandmothers family came from Ithaka possibly via Northern Italy. Any idea how to find Greek birth records?