When John and Francis Canning were planning their 2012 wedding at Manchester Town Hall, they realized that Queen Elizabeth II was scheduled to be in the building for some official meeting at the same time. Just for fun, as they mailed out their invitations, they sent one to the Queen. A few weeks later, they received a response from Buckingham Palace indicating that, while the Queen was happy for them and wished them well, she would not be able to attend. Surprised that they had received any response at all, John and Francis continued to look forward to their special day and never gave the queen another thought. That is, until they were standing in their receiving line after the wedding, looked up, and saw the Queen and Prince Philip head...