Clamadeu wants Blancheflor and brings war upon Beaurepaire when she will not submit. Engygeron commands the forces pressing that demand. By the time Perceval arrives, the defenders have suffered deaths, captivity and a shortage of food. The town's condition explains why Blancheflor seeks the visitor's help and why her people regard the seneschal with hatred. He is not merely an opponent encountered by chance on the road: his actions have harmed the community the young knight undertakes to defend. The siege makes this a struggle for food, safety and the town's future, rather than a contest between two isolated champions.

Perceval rides out and challenges Engygeron, who expects the castle and its lady to fall into his master's hands. The fight begins with mounted attacks and continues after the seneschal is unhorsed. Perceval dismounts and presses the contest with his sword until Engygeron asks for mercy. At first the young man refuses. Remembering Gornemant's instruction changes his decision: he should not kill a conquered knight who yields. This is not the effortless victory of someone who has never handled weapons, but a difficult encounter in which recent training and a remembered rule affect the outcome.

Choosing a place of surrender creates a further problem. Perceval first proposes Blancheflor, but Engygeron fears her vengeance because of his part in the destruction of her household and forces. Gornemant is no safer: the seneschal admits that he killed the lord's brother during the war. Perceval instead sends him to King Arthur. He must also carry a message to the maiden whom Kay struck after she smiled at Perceval. Surrender consequently serves several purposes at once: it spares a life, acknowledges the victor and carries news of him back to the court.

Engygeron reaches Dinasdaron before Clamadeu, who is subsequently defeated and sent after him. Chrétien's account already places the seneschal among Arthur's company and council when his bloodstained master arrives. Engygeron recognises him and explains who he is to those present. This reception provides a genuine narrative change from hostile commander to a man retained at court. It does not, by itself, supply a complete record of lifelong Round Table membership. Nor should an account of Arthur's earlier accession wars be inserted into this episode without identifying the separate romance that supplies it.

Wolfram reworks the siege within Parzival: the seneschal is Kingrun, his lord is Clamide, and the threatened ruler is Condwiramurs at Pelrapeire. The related structure makes comparison useful, but the German names and territories should not replace Chrétien's Beaurepaire setting without explanation. Kingrun is therefore identified here as a literary counterpart rather than an unconditional alternative name. Engygeron's distinctive episode remains the negotiation after defeat. Gornemant's teaching preserves his life, while the consequences of his own earlier violence rule out two possible destinations and lead him towards Arthur.