Passage: In 1948, Alderman Fred Henderson, a former mayor of Norwich who had been imprisoned in the Castle for his part in the food riots of 1885, proposed a memorial to Kett. Originally hoping for a statue, he settled for a plaque on the walls of Norwich Castle engraved with his words and unveiled in 1949, 400 years after the rebellion. In the 21st century the death of Kett is still remembered by the people of Norwich. On 7 December 2011, the anniversary of his death, a memorial march by members of Norwich Occupy and Norwich Green Party took place and a wreath was laid by the gates of Norwich Castle.
How many Norwich groups memorized Henderson in 2011? How many years after Alderman Fred Henderson was imprisoned for his part in the food riots did he propose a memorial to Kett? How many years after a plaque for Kett was unveiled was there a memorial march by members of Norwich Occupy and Norwich Green Party took place and a wreath was laid by the gates of Norwich Castle? How many years after proposing a memorial was Henderson awarded a plaque? How many years after taking part in the food riots did Henderson propose a memorial to Kett? How many years after the memorial was unveiled did the memorial march take place? How many years before receiving a plaque had Henderson been imprisoned for taking part in food riots? How many years was Alderman Fred Henderson imprisoned before proposing the memorial to Kett? How many years were between the fodd riots and the proposal of a memorial to Kett? What year was the rebellion which Kett participated in? What year was the rebellion? Which happened first, the memorial plaque or the memorial march?