Wikipedia
Gwersyllt is an urban village and a local government community, the lowest tier of local government, part of Wrexham County Borough in Wales.
The densely populated village is one of Wrexham's largest and is situated in the north western suburbs of the town, bordering the nearby villages of Llay, Cefn-y-Bedd, and Sydallt. The community, also including the villages of Summerhill and Bradley, had a total population of 10,056 at the 2001 census, rising to 10,677 at the 2011 Census.
The name is usually stated to be derived from the Welsh word, gwersyll, meaning "campsite", with the final t common in the area's dialect. This is, however, a comparatively modern form, and during the mediaeval period the name was written as "Wershull" or "Wersull", with "Gwershull" and "Wersham" occurring in the 16th century. It is therefore possible that the present name, like others in the area, is a Welsh adaptation of an earlier English name ending in "-hull" (i.e. "hill").