
Myosotis is part of the borage family and there are various folk lore based stories for it’s name. One of them is based on courtly love. A knight was walking with his lady beside a river. Obviously when one goes courting it is essential to wear full armour – in this case the knight was very chivalrously carrying the lady’s flowers when he slipped and tumbled into the raging current – as he was swept away he threw her flowers to her crying “Forget me not!” And there you have it!
Courtly love is of course the medieval form of ritualised love expressed by a knight for a married lady who is outside his reach – so duty, honour, devotion and courtesy were all important as they were part of the chivalric code. Ideally a knight’s love should be unrequited. Lancelot and Guinevere became very popular at this time. For a more in-depth article about the literature of courtly love follow the link to the British Library:
https://www.bl.uk/medieval-literature/articles/love-and-chivalry-in-the-middle-ages

By 1190 the monks of Glastonbury had cashed in on the popular stories of the knights of the Round Table with the discovery of the graves of King Arthur and his queen.
Courtly love became the rage in the twelfth century at the point where tournaments also became the height of fashion. The use of courtly love as a motif in England grew when Eleanor of Aquitaine became queen. It was William IX of Aquitaine (Eleanor’s grandfather) who made it fashionable in 1101. Aquitainean troubadours carried songs of romance around Europe. It should be noted that William’s love was not unrequited – he appears to have been something of a serial seducer.
Henry of Bolingbroke adopted the forget-me-not as an emblem during his exile in 1398 when Richard II banished him from England for ten years. When his father John of Gaunt died the following year Richard turned the sentence into banishment for life – setting in motion the events that led to his usurpation.
Anyway, back to the forget-me-not, in medieval times if you got bitten by a dog or a snake you might be treated with forget-me-not. Gerard called it scorpion grass named due to the shape made by the curling bract of flowers.
Phillips, Stuart. (2012) An Encyclopaedia of Plants in Myth, Legend, Magic and Lore. London: Robert Hale
Swabey F. (2004) Eleanor of Aquitaine, Courtly Love and the Troubadours