I'll try to contact with this foundation. Maybe it will be interesting for you that Strachwitz family prabably has medieval polish origin. According to old legend twelve brothers from town Strachowice took part in the battle of Legnica in 1241. They fought against Tatars and won. Only one brother survived and he was the first ancestor of Starchwitz family. Polish origin of surname "Strachwitz" is "strachu nic" what means "he is not afraid" or "he is brave". I found this information at
http://pl.wikipedia.org/wiki/Strachwitz. Unfortunately this site is only in polish version. If you speak german you can try find more information at
http://www.strachwitz.net/. I can't speak german :-(