Princess Caroline (in yellow, left) and Prince Albert (in yellow, right) of Monaco arriving at Dublin airport, circa June 1961. (Photo by Ray Bellisario/Popperfoto via Getty Images/Getty Images)
Princess Caroline (in yellow, left) and Prince Albert (in yellow, right) of Monaco arriving at Dublin airport, circa June 1961. (Photo by Ray Bellisario/Popperfoto via Getty Images/Getty Images)