Rhodri's grandson, Hywel Dda (Hywel the Good), formed the kingdom of Deheubarth by joining smaller kingdoms in the southwest and had extended his rule to most of Wales by 942.
Rhodris barnebarn, Hywel Dda (Hywel den Gode), skabte kongeriget Deheubarth ved at samle mindre kongeriger i sydvest og han udvidede sit land til størstedelen af Wales i 942.