Hope you and your family had a blessed xmas and new year. Well you are so right we are related. My great grandmother Emma Roebeck is your dad`s sister married to a guy from the Island Rotuma an Island off of Fiji and his name is Garisau Eliesa Vaea. My grandfather is Esau Roebeck and my mother is Olga Saimua Roebeck. I have asked the same question to my mother. Did she ever heard of the name RAZILUS OLAF FREDERICK ROBACK now ROEBECK and she said, from her understanding he might have other names but he never use it back in the days, because the Germans officials was trying to locate all the Germans and to return them back to Germany. Emmy and Olaf have 6 kidz. Martha, Anna, Niccolina, Emma( My great great grandmother), Thomas & Fritz your grandfather.
Well this is my little input about our family and hopefully you can share some more information in regards to our family history.
Jerry Pete Roebeck(Roback) Lotopa Apia, Samoa PH: (0685) 7221960 OR 7610374