On OpenStreetMap
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Regions with same name.
Badge of United KingdomUnited Kingdom Badge of EnglandEngland  Badge of Greater LondonGreater London Badge of London Borough of Richmond upon ThamesLondon Borough of Richmond upon Thames 

Unowned Region

Petersham unruled Petersham

Up to now 44 distinct quadrants have been played within the region Petersham.
When? Ruler Mapper
Current Score
For more information about rulers or mappers, look at this Page in our Wiki.

Sibling Regions of Petersham

Played regions on same layer like Petersham until now:
Ruled or Mapped: Badge of North SheenNorth Sheen  .
Neither Ruled nor Mapped Sibling Regions to date: Barnes, East Sheen, Ham, Hampton Wick, Kew, Mortlake, St Margarets, Strawberry Hill, Teddington, Twickenham, Whitton.