"Hm. We could say an ancestor emigrated down to Greece. Family was real hermit-like, hardly ever interacted with anyone. You were born at some point. We can sell you as human. You travelled for a bit, had me somewhere along the way. Once the mother died, you decided to move back to England to be near the family roots or something. Being the only surviving member of the Gaunt family, you chose to move into one of the inherited properties."