Welcome to Ireland Reaching Out!
I will contact our HQ to see if there is a local volunteer who covers Kiltoghert parish. I did check the online Irish phone book which is only a partial listing of phone users and did not see any records for Kilbane/Gilbane in the Carrick on Shannon area.
Although it will be too late for your March trip, you may want to look into autosomal DNA testing.
Have a great trip!