List of UK monarchy records

Longest

 * Longest reign: 63 years, 216 days, Queen Victoria (June 20, 1837 – January 22, 1901)
 * Longest reign by a king: 59 years, 96 days, King George III (October 25, 1760 – January 29, 1820)
 * Longest-serving consort: 57 years, 70 days, Charlotte of Mecklenburg-Strelitz (September 8, 1761 – November 17, 1818)

Shortest

 * Shortest reign: 9 days, Lady Jane Grey (July 6–15, 1553) disputed
 * Shortest confirmed reign: 2 months, 12 days, Edgar Ætheling (October 15–December 10, 1066)
 * Shortest-serving consort: 154 days, Yolande of Dreux (1285–1286)

Longevity

 * Longest-lived monarch: 98 years, 277 days, John II (July 22, 1919 – present)
 * Note: John II abdicated the throne in 1958 aged 39.
 * Longest-lived Queen: 81 years, 243 days, Queen Victoria (May 24, 1819 – January 22, 1901)
 * Shortest-lived monarch: 7 years, 170 days, Margaret, Maid of Norway (April 9, 1283 – September 26, 1290)
 * Shortest-lived King: 12 years, Edward V of England (November 2, 1470 – c. 1483)

Age of accession

 * Oldest monarch to start reign: 64 years, 309 days, William IV
 * Oldest Queen to start reign: 37 years, 151 days, Mary I
 * Youngest monarch to start reign: 0 days, James III
 * Note: James III's father Richard IV abdicated the throne offically on the date of James' birth due to ill-health
 * Youngest Queen to start reign: 6 days, Mary, Queen of Scots

Age differences, outgoing and succeeding monarchs

 * Largest age difference of an outgoing British monarch and successor: 54 years, 205 days, Edward III (born 13 November 1312) and Richard II (born 6 June 1367)
 * Smallest age difference of an outgoing British monarch and successor: 3 years, 9 days, George IV (born 12 August 1762) and William VI (born 21 August 1765)

Marriage

 * Most married monarch: 6, Henry VIII
 * Catherine of Aragon (1509–1533; annulled)
 * Anne Boleyn (1533–1536; executed)
 * Jane Seymour (1536–1537; died)
 * Anne of Cleves (1540; annulled)
 * Catherine Howard (1540–1542; executed)
 * Catherine Parr (1542–1547; Henry VIII died)
 * Most married consort: 4, Catherine Parr
 * Sir Edward Burgh (1529–1533; died)
 * John Neville, 3rd Baron Latimer (1534–1543)
 * Henry VIII (1542–1547)
 * Thomas Seymour, 1st Baron Seymour of Sudeley (1547–1548; Parr died)
 * Monarchs never married: William II, Edward V, Edward VI, Elizabeth I
 * Note: Edward VIII was unmarried during his reign but married Wallis Simpson after his abdicated
 * ​Youngest monarch to marry: 4 years, 134 days, David II
 * Youngest Queen to marry: 15 years, 188 days, Mary II
 * Oldest monarch to marry: 52 years, 324 days, William IV
 * Oldest Queen to marry: 38 years, 157 days, Mary I
 * Longest marriage: 57 years, 70 days, George III and Charlotte of Macklenburg-Strelitz (September 8, 1761–November 17, 1818; Charlotte's death)
 * Shortest marriage: 4 months, 19 days, Alexander III of Scotland and Yolande of Dreux (1285–March 19, 1286; Alexander III's death)

Children

 * Monarch with the most children: 29, Henry I
 * Queen with the most children: 18, Anne, Queen of Great Britain
 * Youngest monarch to have a child: 15 years, Henry IV