Looking for information on Catharina Kocol, born 6 Oct 1884, immigrated to Omaha in 1912, and died before 1920. There is also a Tekla Bernal, sister of Catharina, born 4 May 1897, and married Franciszek Bernal in Jun 1919. I am looking for the date, or the picture of the marriage to validate she is the sister of my ancestor. They were alive in 1920 but they were not found in 1930. I have found no obituary for them, so maybe they are listed in a death or cemetery index? Thank you.