Bernardo Putairi (died 1 January or 7 January 1889) was the Prince Regent of the island of Mangareva, and other Gambier Islands including Akamaru, Aukena, Taravai and Temoe from 1873 to 1881.
 He served as regent and de facto monarch during the interregnum period when the royal succession of Mangareva was in doubt and after the death of the last royal heir became the last monarch of the island kingdom.
 His name is often written Putaïri or Putairï in French sources.
Kalākaua (November 16, 1836 – January 20, 1891), born David Laʻ amea Kamananakapu Mahinulani Naloiaehuokalani Lumialani Kalākaua and sometimes called The Merrie Monarch, was the last king (and second to last monarch) of the Kingdom of Hawaiʻ i.
 He reigned from February 12, 1874 until his death in San Francisco, California, on January 20, 1891.
 Kalākaua had a convivial personality and enjoyed entertaining guests with his singing and ukulele playing.
 At his coronation and his birthday jubilee, the hula that had been banned from public in the kingdom became a celebration of Hawaiian culture.
Katherine Ashley (circa 1502–1565) (or "Astley"), née Katherine Champernowne, was governess to Queen Elizabeth I and became her close friend in later life.
 She was known to the Queen as "Kat," and it is by the name "Kat Ashley" that she is generally known to history.
 She should not be confused with her niece Katherine Champernowne, mother successively of Sir Humphrey Gilbert and Sir Walter Raleigh.
Elizabeth I (7 September 1533 – 24 March 1603) was Queen of England and Ireland from 17 November 1558 until her death.
 Sometimes called The Virgin Queen, Gloriana or Good Queen Bess, Elizabeth was the last monarch of the House of Tudor.
The Union of the Crowns (Scottish Gaelic: "Aonadh nan Crùintean" ; Scots: "Union o the Crouns" ) was the accession of James VI of Scotland to the thrones of England and Ireland, and the consequential unification for some purposes (such as overseas diplomacy) of the three realms under a single monarch on 24 March 1603.
 The Union of Crowns followed the death of Elizabeth I of England — the last monarch of the Tudor dynasty, who was James's unmarried and childless first cousin twice removed.
The Longhorn Ballroom is a music venue and country western dance hall in Dallas, Texas (USA).
 It was known in the early 1950s as Bob Wills' Ranch House when the large ballroom was built and operated by O.L. Nelms, an eccentric Dallas millionaire, for his close friend, western swing bandleader Bob Wills.
 When Wills left, O.L. Nelms leased the sprawling dance club to Jack Ruby who later killed Lee Harvey Oswald, John F. Kennedy's accused assassin.
 O.L. Nelms then sold the property to his close friend and business partner Dewey Groom.
The House of Tudor was an English royal house of Welsh origin, descended in the male line from the Tudors of Penmynydd.
 Tudor monarchs ruled the Kingdom of England and its realms, including their ancestral Wales and the Lordship of Ireland (later the Kingdom of Ireland) from 1485 until 1603, with five monarchs in that period.
 The Tudors succeeded the House of Plantagenet as rulers of the Kingdom of England, and were succeeded by the House of Stuart.
 The first Tudor monarch, Henry VII, descended through his mother from a legitimised branch of the English royal House of Lancaster.
 The Tudor family rose to power in the wake of the Wars of the Roses, which left the House of Lancaster, to which the Tudors were aligned, extinct.
O'Carroll (Irish: Ó Cearbhaill ), also known as simply Carroll or Carrell, is a Gaelic Irish clan which is the most prominent sept of the Ciannachta (also known as Clan Cian).
 Their genealogies claim that they are kindred with the Eóganachta (themselves led by the MacCarthys), descended paternally from Ailill Aulom.
 During the Middle Ages until 1552, the family ruled an area within the Kingdom of Munster known as Éile.
 The last monarch Tiege Caoc O'Carroll surrendered and regranted to the Tudor Kingdom of Ireland.
The Native American hereditary leaders during this time are not included.
 Those that are listed as former monarchs of what is now the continental United States were heads of European seated monarchies (or Mexican monarchs, such as Agustín I of Mexico and Maximilian I of Mexico) and themselves never set foot on American soil.
 Others were indigenous monarchs, such as Malietoa Tanumafili I, Tuʻi Manuʻa Elisala and Liliuokalani of Hawaii; The last monarch of each state and territory may not be the last colonial ruler (i.e. Louis XV of France is the last French monarch of Louisiana, but Napoleon Bonaparte, prior to becoming Emperor, was the last ruler of Louisiana).
 Also their end of reign may not be how the US acquired these states.
 One state can have more than one last monarch, since each state may have been the product of many different acquisitions by the United States.
 Different claims of a foreign country are taken into account.
Charles I (Karl Franz Joseph Ludwig Hubert Georg Otto Maria; 17 August 18871 April 1922) was the last ruler of the Austro-Hungarian Empire.
 He was the last Emperor of Austria, the last King of Hungary (as Charles IV), and the last monarch belonging to the House of Habsburg-Lorraine.
 After his uncle Franz Ferdinand was assassinated in 1914, Charles became the designated successor of the Emperor Franz Josef.
 Charles I reigned from 1916 until 1918, when he "renounced participation" in state affairs, but did not abdicate.
 He spent the remaining years of his life attempting to restore the monarchy until his death in 1922.
 Following his beatification by the Catholic Church in 2004, within Catholic community he is commonly known as Blessed Karl of Austria.

Question: What nickname did the last monarch of the House of Tudor give to her governess and, later in life, her close friend?
Answer: "Kat,"