We have a lot of small churches like that, we call them Hayes churches. They had 22 children and they started a church and then some disagreed and started their own church and it still goes on and on. There are probably 15 or 16 churches and most of them have about 15 members and most of them are related.
Try reading the chapter "Protestant" in Garrison Keillor's Lake Wobegon Days...
Cheers!