Queen dowager in the context of "Kesang Choden (queen)"

In a monarchy, a regent (from Latin regens 'ruling, governing') is a person appointed to execute the office of the monarch temporarily. Regencies may arise for a number of reasons, including the monarch being a minor, ill, absent from the country, or otherwise unavailable. A regent may also be appointed in cases where the throne is vacant, or the identity of the legitimate monarch is disputed.

The rule of a regent or regents is called a regency. A regent or regency council may be formed as an ad hoc measure, or there may be a formal and regular appointment process. Regent in some countries has also been used as a formal title granted to a monarch's most trusted advisor or personal assistant. If the regent is holding the position due to their being in the line of succession, the compound term prince regent is often used; if the regent of a minor is their mother, and she is wife or widow of a king, she would be referred to as queen regent.

Margaret Tudor (29 November 1489 – 18 October 1541) was Queen of Scotland from 1503 until 1513 by marriage to James IV. She then served as regent of Scotland during her son's minority, and fought to extend her regency. Margaret was the eldest daughter and second child of Henry VII of England and Elizabeth of York, and the elder sister of Henry VIII. By her line, the House of Stuart eventually acceded to the throne of England and Ireland, in addition to Scotland.

Margaret married James IV at the age of 13, in accordance with the Treaty of Perpetual Peace between England and Scotland. Together, they had six children, though only one of them reached adulthood. Margaret's marriage to James linked the royal houses of England and Scotland, which a century later resulted in the Union of the Crowns. Following the death of James IV at the Battle of Flodden in 1513, Margaret, as queen dowager, was appointed as regent for their son James V. A pro-French party took shape among the nobility, urging that the king's closest male relative, John Stewart, Duke of Albany, should replace Margaret as regent. In seeking allies, Margaret turned to the Douglases, and in 1514 she married Archibald Douglas, 6th Earl of Angus, with whom she had one daughter, Margaret Douglas. Margaret's marriage to Angus alienated other powerful nobles and saw Albany take her place as regent. In 1524, Margaret, with the help of the Hamiltons, removed Albany from power in a coup d'état while he was in France, and was recognised by Parliament as regent, then later as chief counsellor to James V when he came of age.

A queen mother is a former queen, often a queen dowager, who is the mother of the reigning monarch. The term has been used in English, since the early 1560s. It arises in hereditary monarchies in Europe and is also used to describe a number of similar yet distinct monarchical concepts in non-European cultures around the world. The rank does not go to all mothers of monarchs though. A mother of a ruling monarch may only be referred to as queen mother if she was a queen consort as opposed to a princess consort.

Margaret Douglas, Countess of Lennox (8 October 1515 – 7 March 1578), born Lady Margaret Douglas, was the daughter of the Scottish queen dowager Margaret Tudor and her second husband Archibald Douglas, 6th Earl of Angus, and thus the granddaughter of King Henry VII of England and the half-sister of King James V. She was the grandmother of King James VI and I.

In her youth she was high in the favour of her uncle, Henry VIII, but later incurred his anger for her unauthorised engagement to Lord Thomas Howard, who died imprisoned in the Tower of London in 1537. In 1544, she married Scottish nobleman Matthew Stewart, 4th Earl of Lennox. Her son Henry Stuart, Lord Darnley, married her niece Mary, Queen of Scots, and was the father of James VI and I.