I've played Benedick before, but it wasn't until I saw a video of a Canadian production that I realized the meaning behind the following exchange:
Don Pedro: I believe this is your daughter?
Lenoato: Her mother hath many times told me so.
Benedick: Were you in doubt sir, that you asked her?
Leonato: No, Signor Benedick, for then you were a child.
Yes, Benedick is implying that Leonato was a cuckold and that his daughter Hero was born illegitimately, but he's also implying that he himself is the father. Leonato brushes him off by saying that he was too young to have dealt in those Country Matters. -A Troper Who Legitimately Hasn't Signed Up
