“David was alive in the 6th century in Wales and was a bishop there. He evangelised and set up places in Cornwall, Brittany and sent others there, plus Ireland to hear the word of God. He has been the patron saint of Wales for quite a few centuries, date unknown, and his day is still celebrated there.
The leek is associated with him, since this is reckoned to have been worn around this time when the Saxons, precursors of the English, took to the field of battle to fight Welsh forces. Unfortunately they had similar uniforms so the Welsh decided to take leeks from a nearby field and wear them as a way of distinguishing them from the enemy.”
Ken Bayliss, Welshman & Co-Author of the cookbook “Once Upon a Spice”