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This project aims to collect all informations about the origins of Grewing family. This surname is known also with some variants: Graf, Grafe, Graef, Graff, Graffen, Graffin, Grafen, Grafin, Grav, Graaf. I found Grewing in Italy, Germany and USA. The ethimology of the surname is dutch but I found the first evidence of Grewings in the ancient Prussia (today is the western Poland).