THE KINGS AND QUEENS OF BRITAIN, PART I (from Geoffrey of Monmouth’s Historia Regum Britanniae, tr. Lewis Thorpe)

See also Bill Cooper’s extended version (incorporating details given by Nennius’s history and old Welsh texts, and adding hypothesised dates for each monarch, as explained here).

See also the various parallel versions of the Arthurian section.

Aeneas │ Ascanius │ Silvius = Lavinia’s niece │ Corineus (in Cornwall) Brutus = Ignoge, dtr of Pandrasus │ ┌─────────────┴─┬───────────────┐ Gwendolen = Locrinus Kamber (in Wales) Albanactus (in Scotland) │ └Habren, by Estrildis Maddan ┌──┴──┐ Mempricius Malin │ Ebraucus │ 30 dtrs and 20 sons incl. Brutus Greenshield └Leil └Rud Hud Hudibras └Bladud │ Leir ┌────────────────┴┬──────────────┐ Goneril Regan Cordelia = Maglaurus of Albany = Henwinus of Cornwall = Aganippus of the Franks │ │ Marganus Cunedagius │ Rivallo ┌──┴──┐ Gurgustius (anon) │ │ Sisillius Jago │ Kimarcus │ Gorboduc = Judon ┌──┴──┐ Ferrex Porrex Cloten of Cornwall┐ Dunvallo Molmutius = Tonuuenna ┌──┴──┐ Belinus Brennius = dtr of Elsingius of Norway Gurguit Barbtruc┘ = dtr of Segnius of the Allobroges └Guithelin = Marcia Sisillius┘ ┌┴────┐ Kinarius Danius = Tanguesteaia Morvidus┘ ┌──────┬────┴─┬──────┬──────┐ Gorbonianus Archgallo Elidurus Ingenius Peredurus │ ┌──┴──┐ │ │ │ (anon) Marganus Enniaunus │ Idvallo Runo Gerennus Catellus┘ Millus┘ Porrex┘ Cherin┘ ┌─────┴─┬───────┐ Fulgenius Edadus Andragius Eliud┘ Cledaucus┘ Clotenus┘ Gurgintius┘ Merianus┘ Bledudo┘ Cap┘ Oenus┘ Sisillius┘ ┌──┴──┐ Bledgabred Archmail └Redon └Redechius └Samuil └Penessil └Pir └Capoir └Digueillus └Heli ┌──────┬─────┴──┐ Lud Cassivelaunus Nennius ┌──────┴┐ Androgeus Tenvantius │ └Cymbeline Scaeva ┌────┴─┐ Guiderius Arvirargus = Genvissa, dtr of Claudius Marius┘ Coilus┘ Lucius┘ ┌──────┐ Roman woman = Severus = British woman Sulgenius Geta┘ └Bassianus

Carausius

Asclepiodotus ┌───────┬──────┬────┐ Coel Ioelinus │ Marius Constantius = Helen┘ = Roman │ Constantine┘ │woman │ ┌───────────┐ │ │ (anon) Octavius of the Gewissei │ Trahern └Conanus Meridiadocus └(anon dtr) = Maximianus (given Brittany) ¦ Gracianus Municeps ┌┴──────────────┐ Aldroenus Constantine ┌───────┴───────────┬─────┬─────────────┐ Constans ┌────┐ │ │ │ Hengist Horsa │ │ │ ┌─┴──┬───┐ │ │ │ Vortigern = Renwein Octa Ebissa │ │ │ ┌─┴───┬──────┐ Aurelius │ │ Vortimer Katigern Paschent Ambrosius │ │ ┌─────────────────┐ │ │ │ Gorlois = Ygerna = Utherpendragon │ Cador ┌────┴┐ ┌────┬────┐ │ │ Guinevere = Arthur Anna = Loth Urian Auguselus │ │ ┌────┴┐ │ │ ┌──┴─┬──────┐ Gawain Mordred Ywain │ Constantine (anon) ┌(anon) └two sons │ two sons┘ Aurelius Conanus │ └Vortiporius Budicius of │ └Malgo Brittany = (anon dtr)* ┌─────┴──────────────┐ │ Keredic Ennianus Run Hoel Belin┘ └(anon dtr) = Hoel┘ ┌Iago┘ └Alan Cadvan of the Venedoti Ethelfrid of Northumbria Hoel┘ ┌┴───────┐ │ ┌┴──┐ Cadwallo (anon) Edwin Salomon (anon) = Peanda’s sister ┌┴──┐ ┌┴──┐ │ ┌┴─────────┐ Brian (anon dtr) Offrid (anon) Alan Cadwallader (anon) └two sons └Yvor └Yni

*According to Thorpe, there is confusion in the text between the sister of Aurelius and the sister of Arthur. Here I follow his interpretation.