Charles' first wife, the late Princess Diana, also fondly referred to her aunt-in-law as Margo.
I love her to bits, and she has been wonderful to me from day one."
Years later, the queen would adopt an even stranger moniker.
The late Prince Philip had a ratherunusual nickname for his wife, Queen Elizabeth: Cabbage.
The monarch would later be called Granny by her two grandchildren and Gan-Gan by her great-grandchildren.
Harry’s nickname was unsurprisingly selected due to his crop of red hair.
