Wisbech prior to drainage schemes, it sat on the river Great Ouse. The port is Cambridgeshire's only gateway to the sea. In 1631 Sir Cornelius Vermuyden built the Horseshoe Sluice at Wisbech at a cost of £8,000. In 1680 the trade of Wisbech had increased sufficiently for the port to be reckoned independent and no longer a member of King's Lynn. In 1720 the corporation was licensed to buoy the channel for the first time. By 1751 it was possible in a dry year to walk across the river bed under Wisbech Bridge. Ship building was carried out in the late
Wisbech Grammar School how master Jacob Creffen was granted leave by the Bishop of Ely to collect an "adequate salary" from each scholar according to the "praiseworthy, ancient and approved custom". Following the English reformation, the Guild of the Holy Trinity was dissolved and replaced by the Wisbech Corporation. The school was renamed and re-established by King Edward VI in 1549, who gave the school a charter "for the instruction of youth in grammatical knowledge and polite literature". The charter is still in existence, and is currently held by the Wisbech Museum. The same year, land was given for the construction of a