MAW, or MAWDDACH (THE), a river of Merioneth. It rises under Carn-Twrog; runs about 10 miles southward to the vicinity of Dolgelly; begins there to widen Slowly into estuarial character; and goes thence about 9 miles, south-westward, to the sea at Barmouth. It traVerses very fine scenery; and it makes three picturesque Falls,-one of 60 feet, in Dolmelynllyn Park, -another of 60 feet, called the Mawddach fall,-the third of 150 feet, called Pistyll-y-Cain.

(John Marius Wilson, Imperial Gazetteer of England and Wales (1870-72))