Llanfairpwll was the location for Britain's first ever Women's Institute. This is commemorated on a plaque on the outside of the village's WI hall. The inscription is as follows:

1897: Adelaide Hoodless started a social and educational movement for women in Stoney Creek, Ontario, Canada and called it the Women's Institute.

1913: Mrs Alfred Watt, who had worked at WI headquarters in Canada, came to live in London and tried, without success, to start a WI in the south of England.

1914: The First World War started and as food production was vital in wartime the Agricultural Organisation Society was set up to help the government.

1915 - June: Mrs Watt, who had become involved in the AOS, was invited to Bangor University to address the north Wales branch of the society. There she met Colonel J Stapleton Cotton, its chairman. He lived in Llanfairpwll, a man who worked tirelessly to benefit the local community. He invited a group of ladies from the village to meet Mrs Watt and consider starting a WI here.

1915 - September: The WI was officially founded in Llanfairpwll and six months later in Singleton, West Sussex, the first WI in England followed. By 1917, there were more than 100 institutes and now there are 7,600, so that the WI is the largest women's organisation in Britain.

The information board was funded by a legacy to Llanfairpwll WI by Mrs Gwen Davies, a faithful member for many years.