NIGHTBRINGER | The Arthurian Encyclopedia

Plegrus


In Icelandic romance, the greatest knight of King Philippus of England, Mark’s father.

When his lord died, he joined Blenzibly, Philippus’s daughter, in her short revolt against King Mark. They were lovers.

He was later slain in joust by Kalegras, who subsequently became the father of Tristan.


Source
Saga af Tristram ok Isodd | 14th century