Not sure what makes me think it, just kinda came to me when I was sat on the county boundary on the north edge of Winter Hill looking over Anglezarke. All 3 are inter connected and have a natural boundary about them. I'd expect the next family group to be where the cheetham close circle is.

Did you see the tool I posted under winter hill? (I keep mentioning it cos I love it!)

I found out about the other circle whilst at swinside thanks to a random bloke with kite I met there (must get those photos developed), but I couldn't work out which ones they were as I walked back to the car...