Llangynwyd
from T.C. EVANS (Cadrawd) - History of Llangynwyd Parish, Llanelly, 1887.

"THE LEGEND OF THE DIVISION OF THE PARISHES OF LLANGYNWYD AND MARGAM.

"In olden time, the boundary of the Parish of Llangynwyd was more extensive than at present, and it included the present Parish of Margam within its limits. When a separation was decided upon, a very ingenious and unusual method was adopted to fix the boundary line between the two. It happened that there was in the neighbourhood a lunatic, who was familiarly spoken of as 'The Wild Man' ('Y Dyn Gwyllt'), in safe custody, and it was determined to free this person, and to let the division follow the direction he might take when given his liberty. The spot to start from was agreed upon to be at a well, known as 'Ffynon y Wern', in a dale below Havod-decaf. The men of Llangynwyd and the tenants of Margam mustered in strong force, with a view to offering as much resistance as they could on each side respectively: the interest of Llangynwyd being to retain, and of Margan to obtain as large a share as possible. The lunatic, whose name seems to have been 'Robin', when released, started off in the direction of Margam Mountain, where he took the old Roman road, now known as 'Heol y Moch', along which he continued until he reached a high point on Blaencwmcerwn Mountain. Here the Margam men blocked his way, which forced him to take the direction of the 'Cwm'. When he reached this, the men of Llangynwyd made him retrace his steps, until he reached the Afan River, thereby obtaining considerable advantage. There a person, who was following him closely, threw a hook with so much force, that it hamstrung, and caused him to fall into the river, where he was drowned; the pool into which he fell being known as 'Pwll Robin' to this day. The River Afan divides Llangynwyd from Glyncorrwg and Michalestone-super-Afan on the north; the brook which runs through Cwm yr Aber being its southern boundary. The western boundary line, as given on the map, justifies a good deal of the old Robin legend, for in some parts it is difficult to suppose that the line could have been willingly drawn."

from A.C. Paddison, Tonna