Jon, like Morrigan, had arrived with his siblings. The coronation had interested him and he knew that while he would never go through it himself, but it was quite significant. Alas, his betrothed was unable to make it to the coronation, or so he assumed, since his letters had gone unanswered. And Jon was thinking that maybe after this was over, that maybe he needed to make arrangements to see her since he wondered if something was amiss.
Still, he kept his mind focused on the coronation and when the commotion started, Jon went with the crowd as well, keeping an eye out for any which were injured. This was his job after all. Thankfully, the ones he saw were okay or in the process of being treated by others. That was when the curse hit him in the leg, cause a sickening sound. Pain wracked through his body, but he could mask it. It was hard to walk on it, but he needed to stay and to help as the second curse hit close above it. But he did see Morrigan and tried to rush over (well hobble over) to help her up back onto her feet. He really couldn't say anything, but maybe they could get out and he could see if he could get his sister's injuries tended to.