St Fagans National Museum of History in the context of "St Fagans Castle"

The Welsh Not was a token used by teachers at some schools in Wales, mainly in the 19th century, to discourage children from speaking Welsh at school, by marking out those who were heard speaking the language. It could be followed by an additional punishment; sometimes a physical punishment. There is evidence of the Welsh Not's use from the end of 18th to the start of the 20th century, but it was most common in the early- to mid- 19th century.

The token was seen as a teaching aid to help children learn English. Over time, however, excluding Welsh began to be viewed as an ineffective way of teaching English and by the end of the 19th century schools were encouraged to use some Welsh in lessons. There was a widespread desire for children to learn English among Welsh people in the 19th century and the Welsh Not was not part of any government policy.

Amgueddfa Cymru – Museum Wales, branded as simply Amgueddfa Cymru (formerly the National Museums and Galleries of Wales and legally National Museum of Wales), is a Welsh Government sponsored body that comprises seven museums in Wales. Established by Royal Charter in 1907, it is one of the largest museum networks in the United Kingdom and Wales's most important cultural institution.

The organisation operates seven museums across Wales: National Museum Cardiff (its flagship site), St Fagans National Museum of History, Big Pit National Coal Museum, National Wool Museum, National Slate Museum, National Roman Legion Museum, and the National Waterfront Museum. It also runs Oriel y Parc, a gallery partnership in St Davids, and maintains the National Collections Centre in Nantgarw as its storage facility.