Why do people in Wales celebrate Saint Dwynwen's day?

We're here to explain why people in #Wales and beyond are unseasonably loved up. 🏴󠁧󠁢󠁷󠁬󠁳󠁿 ♥️

#SaintDwynwens #Cymry #LadySaints #CelticMyth

https://www.bbc.com/news/uk-wales-47000509