Mary, Mary, Quite Contrary is an English nursery rhyme.
Some people have asserted that the nursery rhyme had political meaning, claiming that :
Mary Queen of Scots was accounted a great beauty. She was also not known for killing "rows and rows" of people, although one of her lovers, Darnley, was mixed up in a murder. I think the above author has her confused with Mary Queen of England, the half sister of Queen Elizabeth I, (Mary Stuart was their cousin). Mary of England was an agent of the counter-reformation, was married to Philip of Spain, and did execute many Protestants. This was the last gasp of Catholicism as a state religion in England, following upon her father's (Henry VIII) declaring himself head of the (now) Anglican Church. Because of this, and the ultimate victory of Protestantism in England, the Stuart line was finally removed from the throne for good in the 1680s with the overthrow of James II. This led to the Pretender and his son, Bonny Prince Charlie, fomenting revolution from their base in Scotland for many many decades, culminating in the scouring of the Highlands. Whew.