Laeyer, Leger, Leir of Boulogne, Lier, Ligier
He assisted Arthur in the war against Rome. At the battle of Soissons, he killed the Babylonian king Micipsa, and was killed either by Micipsa or by Micipsa’s son, Gecron. Arthur had him buried in Boulogne.
Historia Regum Britanniae | Geoffrey of Monmouth, c. 1138
Roman de Brut | Wace, c. 1155
Brut | Layamon, late 12th century to mid-13th century