Mary I (18 February 1516 17 November 1558), also known as Mary Tudor, and as "Bloody Mary" by her Protestant opponents, was Queen of England and Ireland from July 1553 until her death in 1558. She is best known for her vigorous attempt to reverse the English Reformation, which had begun during the reign of her father, Henry VIII. Her attempt to restore to the Church the property confiscated in the previous two reigns was largely thwarted by Parliament, but during her five-year reign, Mary had over 280 religious dissenters burned at the stake in the Marian persecutions.

Mary was the only child of Henry VIII by his first wife, Catherine of Aragon, to survive to adulthood. Her younger half-brother, Edward VI, succeeded their father in 1547 at the age of nine. When Edward became mortally ill in 1553, he attempted to remove Mary from the line of succession because he supposed, correctly, that she would reverse the Protestant reforms that had taken place during his reign. Upon his death, leading politicians proclaimed Lady Jane Grey as queen. Mary speedily assembled a force in East Anglia and deposed Jane, who was ultimately beheaded. Mary wasexcluding the disputed reigns of Jane and the Empress Matildathe first queen regnant of England. In July 1554, Mary married Philip of Spain, becoming queen consort of Habsburg Spain on his accession in January 1556.

After Mary's death in 1558, her re-establishment of Roman Catholicism was reversed by her younger half-sister and successor, Elizabeth I.

The College of Arms, or Heralds' College, is a royal corporation consisting of professional officers of arms, with jurisdiction over England, Wales, Northern Ireland and some Commonwealth realms. The heralds are appointed by the British Sovereign and are delegated authority to act on behalf of the Crown in all matters of heraldry, the granting of new coats of arms, genealogical research and the recording of pedigrees. The College is also the official body responsible for matters relating to the flying of flags on land, and it maintains the official registers of flags and other national symbols. Though a part of the Royal Household of the United Kingdom, the College is self-financed, unsupported by any public funds.

Founded by royal charter in 1484 by King Richard III, the College is one of the few remaining official heraldic authorities in Europe. Within the United Kingdom, there are two such authorities, the Court of the Lord Lyon in Scotland and the College of Arms for the rest of the United Kingdom. The College has had its home in the City of London since its foundation, and has been at its present location, on Queen Victoria Street, since 1555. The College of Arms also undertakes and consults on the planning of many ceremonial occasions such as coronations, state funerals, the annual Garter Service and the State Opening of Parliament. Heralds of the College accompany the sovereign on many of these occasions.

The College comprises thirteen officers or heralds: three Kings of Arms, six Heralds of Arms and four Pursuivants of Arms. There are also seven officers extraordinary, who take part in ceremonial occasions but are not part of the College. The entire corporation is overseen by the Earl Marshal, a hereditary office always held by the Duke of Norfolk.