What happened to the groom at the Red Wedding?
As Catelyn looks into Robb’s eyes, Roose Bolton steps in front of Robb and tells him “the Lannisters send their regards”, stabbing him through the heart.
Is Edmure Tully killed at the Red Wedding?
Instead, when everyone showed up for the festivities, the Red Wedding occurred. Edmure was not killed, as he was off bedding his new bride at the time, but the next morning he found himself a prisoner of the Freys, a position from which he never really escaped.