I don't intend to "take him on", especially if he's some kind of ... vampiro. All I want to do is know. If you were in Firenze and Venezia in 1480, 1490, you know of me. You know I can handle myself against anyone ... human.
I don't need to know details of your intimate lives, nor would I ask; I still try to be a gentleman from time to time. But if you speak truth ... how? You spoke of you both falling in love with a vampira?
And should I bother asking? You are his brother. If he came for me, would you help him kill me? I have no quarrel with you. I would have no quarrel with him if he had not mocked the murder of my family.