Widecombe Fair is an annual fair in England, held in the Dartmoor village of Widecombe-in-the-Moor on the second Tuesday in September. It is well known as the subject of the folk song of the same name, featuring Uncle Tom Cobley and his friends.

The earliest written record was in 1850, when it was described in the Plymouth Gazette as a cattle fair. It soon became an opportunity to show and sell other livestock, particularly locally bred sheep and Dartmoor ponies, and by the 1920s it had also become a sports day for local schoolchildren. In 1933, stalls were introduced, selling rural arts and crafts. 

Widecombe Fair was suspended during the Second World War, but reinstated in 1945 with new attractions, including a gymkhana and tug of war. All profits were donated to the 'Local Welcome Home Fund' for returning soldiers, sailors and airmen.

Today's visitors will still see displays of quality livestock, although there are many other attractions, including: a dog show, displays of local produce, vintage farm machinery, rural arts and crafts, bale tossing and a now traditional appearance by "Uncle Tom Cobley": a local resident in fancy dress, riding a grey mare.

According to en.wikipedia