sentences:  In 1549, Robert Kett led an uprising in Norfolk; marching on Norwich, his army camped on the north-east side of the river, overlooking Cow Tower.Two rebel attacks were then made across the river into the Hospital meadows, in an attempt to take Bishop Bridge, which would have given them access to the city.Kett had brought artillery, which he turned on the Cow Tower, damaging the latter's parapets.