NIGHTBRINGER | The Arthurian Encyclopedia

Jonathal

Ionas, Jonathan, Jonathas

Earl of Dorset or Dorchester under King Arthur.

He fought for Arthur in the Roman War and led half a legion of warriors at Soissons.


Sources
Historia Regum Britanniae | Geoffrey of Monmouth, c. 1138
Roman de Brut | Wace, c. 1155
Brut | Layamon, late 12th century to mid-13th century
Alliterative Morte Arthure | c. 1400