Genealogy / THE MEANING AND RESEARCH OF MY POLISH LAST NAME, SURNAME? [4500]

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Last Name Jodzko

My fiancé's last name is Jodzko, if you google Jodzko he can tell me exactly how he is related to every Jodzko that pops up. His grandfather came over to America during WWII and his last name was not changed after coming over. His grandfather claims his last name has always been Jodzko (he was 18 or 19 when he came over so he remembers well) My fiances grandfather has mentioned that his father sliced his last name shorter after a disagreement with his father. I have been told SEVERAL times that the last name was just shortened so it should be similar to Jodzko, but if that's the case then when googling Jodzko I feel I should be able to figure out the longer version of their last name. I know the Polish alphabet is different and letters are pronounced differently, is there anyone who could give me a possible different spelling of his last name based on the way letters are pronounced in Polish or based off their difference in alphabet. Last name Jodzko.