Yousha could also have been Youshah, or Youchah or Youcha. My husband's grandfather came to U.S. from Macedonia (city of Bitola or Monastir) and on the passenger ship manifest it is written Youshah. In the U.S. he used the name Youchah and dropped the h and used Youcha. But in Macedonia it could have been the surname Ischach or Ischah. I am in the process now of trying to find out the name used in the 1800's and 1900's in Macedonia in an effort to find out if any people using these names were deported to Treblinka in 1943.