Rheinwg

Kingdom of Rheinwwg
Teyrnas Rheinwg (Welsh)
Map combining the Kingdom of Dyfed and the Kingdom of Brycheiniog
Common languagesOld Welsh, Vulgar Latin, Old Irish
GovernmentMonarchy
Historical eraMiddle Ages
Preceded by
Succeeded by
sub-Roman Britain
Deheubarth
Lordship of Brecknock

The Kingdom of Rheinwg (Welsh: Teyrnas Rheinwg) was a Brittonic kingdom, in the south of modern-day Wales, which is often thought to have been a union of the kingdoms of Dyfed and Brycheiniog