I'm sorry, I don't have information on your Clemens family, but am interested to know if you may be related to my maternal Grandfather, Albert Borau, who was born in Krobiczew Poland-it was considered Russia at the time (near Warsaw) in 1891. He immigrated to America in 1909. His parents were Friedrich and Justina (Sodke) Borau. You never know, I found my 3rd cousin from Germany, when researching Albert's wife on Ancestry! Good luck with your search! I'd love to hear from you!