Crop marks from aerial photographs of the 1950s suggest the existence of a semi-permanent Roman marching camp on the flood plain by the river Tweed at Toll Wood (near Traquair) and at nearby Eshiels.
The town is said to have been founded by an itinerant pilgrim monk called St. Ronan in A.D.737, who came to Innerleithen via the River Tweed in a coracle.
Monks would certainly have travelled the natural route of the Clyde and Tweed valleys on their way between the religious centres of Iona and Holy Island.
In the local legend of the town's founding "St. Ronan Cleik't the Deil by the hind leg and banished him", possibly a metaphor for the monks bringing Christian learning back into these regions.
The legend was actually formalised by Sir Walter Scott and was later instigated in a town festival called "The Cleikum Ceremonies" in 1901.
It is said that a son of King Malcolm IV of Scotland (who was staying at Traquair House on a hunting trip), drowned accidentally in a deep pool at the confluence of the rivers Leithen and Tweed.
Of these, only one, Caerlee Mills remained with a reduced workforce of 33 after its owners JJ & HB Cashmere went into administration in 2010, finally closing in April 2013.
Tourist attractions within the town include Robert Smail's Printing Works and St. Ronans Wells, and nearby Traquair House.
This proves a popular stopping point for locals and visitors to watch the autumn and winter runs of salmon.
An uplift shuttle bus service provides access to the top of Plora Rig, ready for riders to plummet back down the trails.
In recent years the 'Golfie' trails in Caberston Forest have been widely developed and sanctioned, providing a unique network of rider managed technically demanding MTB descents.
Acts that have played at the festival include Eddi Reader, Julie Fowlis, Dougie MacLean, Karine Polwart, Karen Matheson and Old Blind Dogs.