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Arthurian Fiction is a sub-project of Fictional Genealogy. This project collects and identifies people for whom no historical evidence exists. Use this project for people who are medieval inventions from the many stories of Arthurian romance.

The Wikipedia article "King Arthur's family" has a good, general introduction to the family of King Arthur:

The Many Strands of Tradition

There are several strands of tradition blended into our modern idea of King Arthur:

1. The truly archaic sources, such as Nennius. Not much genealogy there, but this is where we might see the historic Arthur.

2. The Welsh tradition, which has Arthur at the center of a group of people descended from Amlawdd Wledig, king of the Britons.

3. The pseudo-historical account of Geoffrey of Monmouth, which differs in some major ways from the Welsh tradition.

4. The romances of Chrétian de Troys and his successors, which turned the Arthurian material into a rollicking good time and a lot of purely invented (and often allegorical) genealogy.

This article has a nice overview of the Welsh material versus Geoffrey of Monmouth.

Welsh Tradition

Descent of Arthur

  1. Llŷr
  2. Brân
  3. Caradoc
  4. Cynan
  5. Cadwr
  6. Eudaf
  7. Morfawr
  8. Tudwal
  9. Cynfawr
  10. Custennin ("Constantine")
  11. Uthyr Pendragon
  12. Arthur

Reference: Mostyn MS. 117 (13th century)

Family of Arthur

  1. Uthyr Pendragon, married Eigr (daughter of Amlawdd / Anlawd Wledig)
    1. Arthur, married Gwenhwyfar (daughter of King Ogrfan / Gogrfan Gawr, and sister of Gwenhwyach)
      1. Kyduan / Cydfan, son of Arthur and Eleirch (daughter of Iaen)
      2. Amr / Anir / Amhar, son of Arthur
      3. Gwydre, son of Arthur
      4. Llacheu, son of Arthur
      5. Duran, son of Arthur
    2. Madawg / Madoc ap Uthyr, brother of Arthur
      1. Eliwlod
    3. Gwyar, sister of Arthur
      1. Gwalchmei (= Gawain)
    4. Rica, half-brother of Arthur on his father's side
      1. Gormant

Family of Amlawdd Wledig

  1. Amlawdd Wledig ("Prince Amlawdd")
    1. Eigr, daughter of Amlawdd, married Uthyr Pendragon
      1. Arthur
    2. Goleuddydd, daughter of Amlawdd, married Cilydd (son of Celyddon)
      1. Culhwch, married Olwen (daughter of Ysbaddaden, a giant)
    3. Rieingulid, daughter of Amlawdd, married Bicanus
      1. St. Illtud "the Knight"
    4. (daughter of Amlawdd), married Custenhin
      1. Goreu mab Custenhin
    5. Llygatrud Emys, maternal uncle of Arthur
    6. Gwrbothu Hen, maternal uncle of Arthur
    7. Gweir Gwrhyt Ennwir, maternal uncle of Arthur
    8. Gweir Baladir Hir, maternal uncle of Arthur

In the General Romance Tradition

Descent of Sir Lancelot

  1. Nascien
  2. Celdioine
  3. Narpus
  4. Nascien
  5. Eian
  6. Jonaans
  7. Lancelot
  8. Ban
  9. Lancelot, married Elaine
    1. Galahad

According to Geoffrey of Monmouth c. 1136

Family of Arthur

  1. (unknown father of Aldroenus and Constantine II)
    1. Aldroenus, 4th King of Brittany after Conanus Meridiadocus
    2. Constatine II, King of Britain, married a wife "born of a noble family, whom Archbishop Guithelinus had himself brought up.
      1. Constans, a monk, then made King of Britain by Vortigern
      2. Aurelius Ambrosius, King of Britain
      3. Utherpendragon, King of Britain, seduced Ygerna, Duchess of Cornwall (wife of Gorlois, Duke of Cornwall).
        1. Arthur, married Guinevere, who "was descended from a noble Roman family and had been brought up in the household of Duke Cador."
        2. Anna, married Loth of Lodensia, Duke of Lothian and later King of Norway *
          1. Gawain, son of Anna and Loth
          2. Mordred, son of Anna and Loth
            1. (unnamed son of Mordred)
            2. (unnamed son of Mordred)
      4. (unnamed sister of Aurelius Ambrosius), married Budicius II, King of Brittany *
  • Elsewhere in the same book Hoel I, King of Brittany is described as a son of Budicius and Arthur's sister, but this is thought to be an error for Aurelius Ambrosius' sister. And, elsewhere in the same book Loth of Lodensia is said to have married an unnamed sister of Aurelius Ambrosius, but this is thought to be an error for Arthur.

Family of Loth

  1. (unknown), "There were in York three brothers sprung from the royal line"
    1. Augueslus, King of Albany
    2. Urian, ruler of Moray
      1. Ywain, King of Albany
    3. Loth, Duke of Lothian and later King of Norway, married Anna, sister of King Arthur
      1. Gawain, son of Anna and Loth
      2. Mordred, son of Anna and Loth
        1. (unnamed son of Mordred)
        2. (unnamed son of Mordred)

According to Bonedd yr Arwr 3 (Mostyn MS. 117) late 13th century

Ancestry of Igraine

  1. Llŷr
  2. Brân (Bendigeid Vran)
  3. Karadoc
  4. Evdaf
  5. Kynan
  6. Kadien
  7. Gwrvawr
  8. Ffrwdwr
  9. Kynwal
  10. Amlawdd
  11. Igraine

Reference: Bonedd yr Arwyr (Descent of the Heroes), Mostyn MS. 117, late 13th century.

According to John of Glastonbury c1350

Ancestry of Igraine

  1. Helaius
  2. Joshua
  3. Aminabad
  4. Castellors
  5. Manael
  6. Lambord
  7. (unnamed son)
  8. Igraine

According to Sir Thomas Malory 1485

  1. Uther, married Igraine (see below)
    1. Arthur, married Guinevere
      1. Mordred, incestuous son of Arthur and his half-sister Morgause
  2. (unnamed), Duke of Tintagel, married Igraine (see above)
    1. Morgause, married Lot
      1. Gawain, son of Lot and Morgause
      2. Mordred, incestuous son of Arthur and Morgause
    2. Morgan le Fay, married King Urien of Gore
      1. Owain
    3. Elaine, married King Nentres of Garlot

According to Gruffudd Hiraethog (died 1564)

Ancestry of Igraine

  1. Evgen
  2. Joshua
  3. Garcelot
  4. Manael
  5. Lambor
  6. Amalawdd
  7. Igraine


  1. The About Me should specifically identify the original source.
  2. On Master Profiles, the curator note should include a summary. For example, Fictional Character from the 13th century Estoire de Graal.