Please correct me if I'm wrong. I was under the impression that according to official canon Isildur was traveling to seek Elrond's council on what to do with the one ring when he was ambushed and killed and the ring lost.

Edit: I'll correct myself, I was wrong. He was on his way to Rivendel, but not to consult with Elrond about the ring. He was going to pick up his wife who stayed there during the assault on Mordor.