Thanks for the French Translations Vil!

It really helps to see that Corguevais is pretty much a pawn for the scheming trio.
Re: Greinfarr.
It does appear that he got his glory after the sordid affair of Niellefresne. He's a hero by the time you get into Ul'dah. Greinfarr, in the association of Niellefresne, was talking like he was happy to be exiled because of his poor behavior. Looks like the murder of Nielle made him sit up a little straighter and cooperate with the establishment.
He also appears in "Struck through the Heart" in an echo. You see him kneeling over Niellefresne and listening to Coulberneaux talk to him about Lolorito guarding the hearstrike. After he admits to not being able to stab his brother's body to end his stasis, Greinfarr says that Nielle was his friend and he would do anything for him.
That annoys me because he didn't stop Nielle that day when he had the chance because he was too scared or something, sending Thancred to do it.