- Universal Colliery, Senghenydd On October 14th 1913, an explosion killing 439 miners took place.
- USA-Wales migration Legend has it that the first Welsh emigrants to the New World were Madog ab Owain Gwynedd (Prince Madog) and a band of settlers in the 12th century.
- Vikings Wales was not heavily colonised by Vikings but they did settle in South West Wales areas including St David's, Haverfordwest and the Gower.
- War memorials History blog on the origins of war memorials.
- Welsh banks History blog on the collapse of the Welsh banks.
- Women war veterans History blog on women war veterans.
- Welsh Not A piece of wood, inscribed with the letters "WN", that was hung round the necks of children who spoke Welsh.
- William Haggar Cinema pioneers who began making films to show to his own audiences on the fairgrounds of South Wales.
- William Morgan Translator of the first version of the whole Bible into Welsh from Greek and Hebrew.
- William Owen Pughe Antiquarian and grammarian known for his Welsh and English Dictionary, published in 1803.
- William Salesbury Denbighshire scholar who published a Welsh translation of the main texts of the Prayer Book in 1551.
- William the Conqueror Duke of Normandy and, as William I, the first Norman King of England.
- William Williams As a result of a speech made by Williams on 10 March 1846, a government inquiry into the state of education in Wales was launched.
- Winston Churchill Served as Prime Minister of the United Kingdom from 1940 to 1945 and again from 1951 to 1955.
- Women in Wales From temperance movements to the Miners' strike, the fiery history of women of Wales.
- Women's Temperance Union Set up by Sarah Jane Rees in South Wales in 1901.
- Women War Veterans History blog that features Margaret Street and Margaret Read who were both members of the Women's Royal Navy Service (WRNS) during World War Two.
