History of the Welsh language
Denbighshire was the only other county where a majority could still speak Welsh, here, 51.0% could speak Welsh and 94.0% could speak English. As for larger urban areas, Aberdare was the only one where a majority could still speak Welsh, here 59.0% could speak Welsh while 95.4% could speak English. In Cardiff, Wales' capital, 5.2% of people could speak Welsh, while 99.7% of people could speak English. 
At a district level, Llanfyrnach rural district in Pembrokeshire had the highest percentage of Welsh speakers; at 97.5%, while Penllyn rural district in Merioneth had the highest percentage of Welsh monoglots; at 57.3%. Bethesda urban district in Carnarvonshire was the most Welsh speaking urban district in Wales; 96.6% of the district's population could speak Welsh.
Danes (Germanic tribe)
The Danes spoke Proto-Norse which gradually evolved into the Old Norse language by the end of the Viking Age. Like previous and contemporary people of Scandinavia, the Danes used runes for writing, but did not write much apparently, as they have left no literary legacy except for occasional rune stones and carvings in wood and various items like weapons, utensils and jewellery.