"Of course, the last thing we would want is commotion."

He looked at the girl and tried to put a name to her face. He couldn't. He noticed Lavinia had followed him, and decided it was probably best if she was away from these two strange men. He gestured towards the other end of the fair. "Why don't we look for your brother? He'll probably have arrived by now, looking for you." 

He glanced at Gertrude again. She was beautiful, much more attractive than his rather plain wife. He'd married her since she was rich, after all. Another furtive glance at the two men convinced him: something was probably going to go wrong, and he'd have to mend it, as Banquo was somewhere else. "Why don't you come with us, Madam? I hear there's quite a good fortune teller we could try on the way to Lavinia's brother. Perhaps they can tell us what the fireworks will be like!"