What is "fonmon"

Fonmon is a hamlet in the Vale of Glamorgan in south Wales. It lies just off the B4265 road to the northwest of Font-y-Gary and Rhoose on the western side of Cardiff Airport. The hamlet is best known for its central duck pond and Fonmon Castle, a historical house located on the otherside of the B4265 road to the north. The largest house in the hamlet is called The Gables, accessed off a drive on the left approaching Fonmon from the north. A number of the houses in the area are thatched roofed.