My great grandmother was Maria (Demchuk) Balan. I have her family history back several generations - through the time of Catherine the Great when two brothers, Michael and Wasyl, left Ukraine and changed the name from Demyanchuk to Demchuk. Maria comes from Michael's line. I have no lineage for Wasyl's line but what I do have is extensive. Happy to share it. Email me at firstname.lastname@example.org
But I'm really looking for any information on the Demchuk, Demyanchuk line or the Balan line. Maria married Nick (Mykola) Balan whose cousin was an Andrew. That's all I know.