From at least the early 19th century Peblig Mill was a water-powered flour mill owned by a succession of different corn merchants including the Huxley family. From the late 19th century, the mill became a woollen factory. The 1st edition of the historic 25-inch O. S. maps, published in 1889, names the mill as a flour mill. The 2nd and 3rd editions, published in 1900 and 1914, name it as a woollen factory and mill respectively. A weir on the Afon Seiont diverted water to a 200 metre-long mill race, and below the mill a tailrace of equal length returned it to the river.
RCAHMW, 2013.

References:
Reference to alterations to Pledig Mill in 1823. NLW (A. O. EVANS 18.) MISCELLANEOUS PAPERS.
Gwynedd Archives ref: XD2/22247
Ordnance Survey historic mapping