Jacob Kahler and Katharina Kahm from Balzer Russia

I'm looking for any information for my family tree as one branch stops at Jacob Kahler and his wife Katharina Kahm who were married in Balzer, Russia in 1907. Jacob came to Lincoln, Nebraska, USA in 1909 and his wife Katharina and son Alex came in 1910.

Any information on the Kahler or Kahm families would be appreciated.