Possibly made by Josiah Wedgwood, Late 1700s
It is said this teapot was made for John Wesley by Josiah Wedgwood, and there is a story that part of the decoration of the teapot was inspired by one of Mrs Wesley's gowns. The teapot is a large one gallon size and it is possible that it was used by the preachers in Wesley's house during meetings or when debating sermons.
Ironically, Wesley was no friend of tea, and he published a pamphlet in 1748 criticizing his contemporaries' craze for (unhealthy and expensive) tea drinking.
See also 'Letter to a Friend, Concerning Tea', in the Collection.