Location and coordinates are for the approximate centre of Trefdraeth within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Trefdraeth, par., Anglesey, 2 miles NE. of Bodorgan sta. and 5½ miles SW. of Llangefni, 3135 ac., pop. 894; contains Yard, near Malltraeth Sands.