I think the JOHAN BARTZ may be the ones That came to Marquette county WI with my ancestors.There were 3 BARTZ families that came together in 1856 from RATSCHIN,POSEN.My family,DANIEL,SYSANA,CHRISTIAN,and JULIUS.Second family JOHAN,WILHELMINE,FREDERICK and AUGUSTUS.Third family MARTIN,EVA and HENRIETTA.Ihave been trying to find out if they were related.I have the record from HAMBURG.