Rivka's death certificate identifies her parents as Morris (Moricz?) Kahn and Sarah Brown (Braun?). Her matzeva identifies her father as Mordechai Mendel. According to various records she was born in Sziget, Maramaros, Hungary probably in 1845. Could Mordechai Mendel have been Mordechai ben Daniel KAHAN from Huszt? I have not been able to find any reference to Rivka's parents in vital records from Maramaros. All suggestions will be welcome.