Which was moved, the river or the pub?
The River; it's quite a story.
Go on then....
In the sixteenth century the River Don split into 2 arms as it approached Thorne. One flowed north into the Aire just above Rawmarsh and wasn't a natural watercourse but a cut called Turnbridge Dike, probably made by the Romans, between the Don at Thorne and the Aire at Rawmarsh.. The other arm meandered south east and then north east at it's confluence with the River Idle before entering the Trent at Adlingfleet just above Trent Falls (Where the Ouse and Trent become the Humber). This second branch formed part of the boundary between Lincolnshire and Yorkshire, and was also the north and western boundaries of the Isle of Axholme. To it's south west, and between it and the River Torne, which flowed into the Idle is Hatfield Chase. Much of the land between these rivers is less than 10 feet above sea level and was low lying marsh.
In 1626 King Charles I asked Cornelius Vermuyden to drain Hatfield Chase. He blocked the Torne and diverted it along a cut to the Trent at Althorpe, blocked the Idle and diverted into the Trent at Stockwith, and blocked the arm of the Don south east / north east arm of the Don at Thorne to concentrate the flow into the northern arm. These actions succeeded in draining Hatfield Chase, but caused flooding problems on the northern arm of the Don close to Rawmarsh. Vermuyden was asked to sort out the flooding problems that he had caused, and he cut the Dutch River to take the Don waters from a point 2 miles from Rawmarsh into the Ouse at Goole.
There has been much more cutting and diverting of since Vermuyden's day, but that's more or less how and why the River Don was moved.