Pádraig is the big tinker's name. They both know him. He came to tell the priest what he'd already heard about Sadhbh and Cormac.
Murainn is the woman with the one eye - Pádraig also knows about her. He's surprised Diarmaid didn't recognize her.
Pádraig confirms the story about Sadhbh and Cormac - it's all true. He recounts the full story.
Sadhbh is determined to seek justice from the king, and Cormac helped her (he's well known to the king's men). They have an appointment for the next day.