Other spellings of the name include; Orloff,Orlov and Orlok (the charactures name in the F.W. Murnaus' film "Nosferutu" and Orosky is a characture in Strauss's opera "Die Feidermaus" the Bat). The name appears to have had some spooky associations. My earliest ancestor was a German living in Romania (land of Vlad Tepes). If you look at another of my postings here you will see that the word "Orlo" itself is a very old word meaning eagle.There is much history that has been lost or destroyed.