Q: Who was the Head of the Commonwealth and Queen of 12 countries that had six blank shots fired at by Marcus Simon Sarjeant? 
Marcus Sarjeant: Marcus Simon Sarjeant (born 1964) is a Briton who fired six blank shots at Queen Elizabeth II as she rode down The Mall to the Trooping the Colour ceremony in 1981. Elizabeth II:  Additionally, she is Head of the Commonwealth and Queen of 12 countries that have become independent since her accession: Jamaica, Barbados, the Bahamas, Grenada, Papua New Guinea, Solomon Islands, Tuvalu, Saint Lucia, Saint Vincent and the Grenadines, Belize, Antigua and Barbuda, and Saint Kitts and Nevis.
Elizabeth II