The tree is the traditional location where in 1549 Robert Kett and his brother William addressed a group of men in what was to become Kett's Rebellion. Their grievances concerned the enclosing of the common lands and the rising cost of living. The rebellion failed and several rebels including Robert and William Kett were hanged. Nine of the rebels were hanged at Kett's Oak.[1][2]
The tree is in poor condition. A split has been filled with cement and the tree is bound with iron bands.[1] In August 2020, Norfolk County Council applied biochar to the roots to improve its health. [3]