In 1901 he founded the Cornish Celtic Society (), and at the Pan Celtic Congress of 1901 made a spirited plea for recognition of Cornwall as a Celtic nation [REF].
The Cowethas Kelto Kernuak organisation petered out, when in 1903, Duncombe Jewell left Cornwall to live at Boleskine near Loch Ness and the colourful and enigmatic Bardd Glas progressively turned his attention away from Cornish Celtic culture to Welsh.