Fal (The), though but a Small river in its origin, is the most Considerable in the central parts of Cornwall, rising not far from St. Columb and swelling into a large expanse near Truro, to which one of its curving branches extends. These winding arms afterwards unite in a spacious basin, the town of Penryn standing on one arm, and the port of Falmouth, as its name denotes, near the mouth of the river.
Source: England and Wales Delineated by Thomas Dugdale assisted by William Burnett; published by Tallis & Co., Green Arbour Court, Old Bailey, 1835.