Oh man, Bran’s visions were one of my favourite parts of A Dance with Dragons. I’m not sure about what half of them mean or whom they featuring, but I would love to share my theories.
… but then somehow he was back at Winterfell again, in the gods-wood looking down upon his father. Lord Eddard seemed much younger this time. His hair was brown, with no hint of grey in it, his head bowed. “… let them grow up close as brothers, with only love between them,” he prayed, “and let my lady wife find it in her heart to forgive …”
I think it’s pretty clear that Ned is praying about Jon, and asks for Catelyn’s forgiveness for his deceit. (I say deceit instead of betrayal, because as I mentioned in this meta, “as close as brothers” line fits with R+L=J theory quite nicely.)