It is remarkable that Pedro was very popular with his own party, despite his crimes, and Chaucer takes his part because our Black Prince fought on the side of Pedro against Enrique at the battle of Najera, April 3, 1367; and because John of Gaunt married Constance, daughter of Pedro, about Michaelmas, 1371. 3573. See the description of Du Gueschlin's arms as given below. The 'field' was argent, and the black eagle appears as if _caught_ by a rod covered with birdlime, because the bend dexter across the shield seems to restrain him from flying away. The first three lines of the stanza refer to Bertrand Du Gueschlin, who 'brew,' i. e. contrived Pedro's murder, viz. by luring him to Enrique's tent. But the last three lines refer to another knight who, according to Chaucer, took a still more active part in the matter, being a _worker_ in it. This second person was a certain Sir Oliver Mauny, whose name Chaucer conceals under the synonym of _wicked nest_, standing for O. Fr. _mau ni_, where [239] _mau_ is O. Fr. for _mal_, bad or wicked, and _ni_ is O. Fr. for _nid_, Lat. _nidus_, a nest. Observe too, that Chaucer uses the word _need_, not _deed_. There may be an excellent reason for this; for, in the course of the struggle between the brothers, Enrique was at first thrown, 'when (says Lockhart) one of Henry's followers, seizing Don Pedro by the leg, turned him over, and his master, thus at length gaining the upper hand, instantly stabbed the king to the heart. Froissart calls this man the Vicomte de Roquebetyn, and others the Bastard of Anisse.' I have no doubt that Chaucer means to tell us that the helper in Enrique's _need_ was no other than Mauny. He goes on to say that this Mauny was not like Charles the Great's Oliver, an honourable peer, but an Oliver of Armorica, a man like Charles's Ganelon, the well-known traitor, of whom Chaucer elsewhere says (Book of the Duchess, l. 1121)-- 'Or the false Genelon, He that purchased the treson Of Rowland and of Olivere.' This passage has long been a puzzle, but was first cleared up in an excellent letter by Mr. Furnivall in Notes and Queries, which I here subjoin; I may give myself the credit, however, of identifying 'wicked nest' with O. Fr. _mau ni_.