MY PETER DOERR WOULD BE MY GGGRANDFATHER AND CONRAD DOERR WOULD BE A FATHER TO THERESA AND ELIZ DOERR. MY DOERR'S ARE FROM GERMANY AND LIVED IN WISCONSIN. THERESA BORN 1853 AND ELIZABETH BORN 1855. THEY ALSO HAD OTHER SIBLINGS. IS THIS THE SAME FAMILY , OR ONLY A COINCIDENCE? DO NOT KNOW WHO THERESA AND ELIZABETH MARRIED.