Translations for chivalrous in French

Here are paragraphs from public domain books translated:

"You then roused his anger by calling him names at a moment when he felt that he had deserved your warmest thanks. He could not explain the true state of affairs without betraying one who certainly deserved little enough consideration at his hands. He took the more chivalrous view, however, and preserved her secret."	— Vous avez excité sa colère en l’injuriant au moment où il pensait qu’il venait de mériter vos plus chaudes félicitations. Il ne pouvait dire la vérité sans trahir quelqu’un qui certainement ne méritait pas tant de considération. Mais il prit le parti le plus chevaleresque, et garda son secret.
The Adventures of Sherlock Holmes, by Arthur Conan Doyle	Les Aventures de Sherlock Holmes, de Arthur Conan Doyle