1263 Henry 111 granted a charter to John de Burgh Lord of the Manor for a weekly market every Tuesday and a fair on St. Remigius day and the day following October 1st and 2nd.

1273 Edward1 granted permission for a fair to be held on St. Agnes's day, January 21st and the day following being the dedication day of the church and another in October.

A third fair of later origin was held on the last Wednesday in April.

1725 The first Cawston sheep fair was on the 14th August and then the last Wednesday in August, Cawston sheep fair was held nearly opposite the Woodrow Inn and was solely for sheep and probably the largest in the country, this fair was just one aspect of the great woollen industry that occupied our ancestors for centuries.
For Norfolk Chronicle Newspaper Notice of Cawston Sheep Shew 18th August 1781 visit Genuki website

Fairs where also held at fairfields, formerly the Fairstead, where annual fairs were held and at what was Dents Bakery-Smith Garage, the site of Marshams Garage and markets on Market Hill to the1900s.

Notes on Fairs:-

Fair: February 3rd 1873:-
Few children attended school, they were dismissed early and a holiday granted.

Fair: February 1st 1883:- On account of the fair in town, the roads round the school were impassable for the
children, so the usual half-holiday was given.

Above from the booklet  "The Centenary of Cawston Voluntary Controlled School 1871-1971.

Fairs (Grays)  held on Dents Paddock early 1900s