'Aren't you that Zeus geezer?' – the hunt for my classical doppelganger

Past searches for my doppelganger proved disappointing. A website I uploaded a picture to some months ago promised to locate an identical stranger, but then responded with two pictures of German guys who looked nothing like me. When I refused to acknowledge either as a dead ringer, the website stopped sending me prospective matches. My plans to seek employment as somebody else's evil twin were put on hold. But what if my true doppelganger belonged to another era?