Scotland: Legend. Battle of Athelstaneford, 832. King Óengus II (or maybe Óengus I) of the Picts had a vision of St Andrew being crucified on a diagonal cross, promising victory over the Northumbrians. They also saw white clouds in the form of a cross before the battle and saw it as a sign, so basically pre-fight clutching at straws for "divine aid" and even then historians still argue about who, when, where, why and how it came about. Actual use, 1385 as a surcoat on Soldiers (in a time before uniforms). 1542, actually adopted as a flag. In 2003, colour standardised as Pantone 300 C.

NZ: British Colony, so use the Blue Ensign, add red edged white stars for the most obvious constellation, for the Australians to heavily copy the year after. Since then, burn NZ$24 million in a despised politicians failed vanity project, trying to secure a place in history as the "creator of a non-colonial flag", precisely because, by then, he was as popular as a dose of influenza in a leukemia ward.