Hi Cynthia, I think we are diferrent Ovcharovs with Simeon. My grandfather (Dimitar Ovcharov) was an electrical engineer and his brother (Sava Ovcharov) was an architect. Also I have lived in the center of Sofia in a building designed by arch. George Ovcharov but my father says he is not a relative. As you see a lot of Ovcharovs are engineers and it is not very common family name.
I have found that the Main Square in Chepinci (small village northeast of Sofia) is called Simeon Ovcharov:
Also Simeon Ovtcharoff-Harisan was mentioned in the book: "Political travelling against the winds of 20 Century" by Spas Raykin. Here it is written that he was elected for a leader of the Bulgarian National Front in Amerika and Canada. I think he was a political emigrant.