interesting about the other matches! 
 
different surname may be due to remarriage and the kids being adopted by the step-father.  or it could be a matter of emigrating that the spelling of the surname was mutilated and/or changed to something else entirely (that was a frequent occurance with the slovak and russian names since they are sometimes so complicated and with the variance of consonants between the native language and english).
 
hope you can figure out the connection!!