The medieval era is full of mysterious events, occurrences, and places, with sometimes even entire kingdoms becoming entirely shrouded in the unknown. We will be examining one of these kingdoms today, Pengwern, whose impact on both the history of Wales and the history of England has seemingly only been slight, with this Welsh kingdom's base on the Wrekin in Shropshire, its only known king, Cynddylan, seems to have succeeded in only antagonising his English neighbours of Mercia and Northumbria. However, the fascinating Welsh history of this realm has largely eluded us for the past 1000 years, and today I'd like...