The first date of the Order's creation is not known. One story says that Achaius, King of Scots, was fighting King Aethelstan of East Anglia and he saw cross of St Andrew in the sky. After he won the battle, Achaius established the Order of the Thistle. Even though Achaius and Aethelstan never fought, this story of the foundation, is given in the Royal Warrant 'reviving' the Order in 1687. Another story says that the Order was instituted, or re-instituted by Robert I at the Battle of Bannockburn.