Tristan and Ezelle (12nd century) also belong to the British system, and they are popular Arthurian legends in Germany and France. Only the remnants of two French poets, Bellevue and Thomas (both in the12nd century) and German poet gottfried von Strasbourg (whose creation period was about 1205- 1220) were preserved. According to this legend, Tristan and Ethel accidentally drank a kind of medicinal liquor, whose function is to make people love each other forever. They were brutally persecuted by Ethel's husband, King Mark, but their love never died. This story affirms the knight's love and describes it as an irresistible force. In this respect, it conflicts with the Christian religious moral view that love is evil. Byzantine works written with late Byzantine ancient Greek stories. Ogasan and Nicolette (13rd century) wrote that Ogasan, a noble son, fell in love with Nicolette, a slave girl, and was opposed by his father. For the sake of love, he forgot the chivalrous responsibility of defending the country and resisting foreign enemies. This legend shows that chivalry has declined in the two or three hundred years from Roland to Olga. In Olga Sen and Nicolette, singing and narration overlap each other, with the singing part written in verse and the narration part in prose.
The legend of knight reflects narrow life and more fictional elements. It often takes one or two knights as the central figure, and organizes their adventures into a long story, which describes in detail the appearance, inner activities and life details of the characters, and the dialogue is lively. These artistic features make the knight legend initially have the scale of modern novels.