Gibrien Marsden will not show up on Green Knoll until you've started the Welcome to Haven timeline. I searched high and low for hours until I figured this out for myself. Thought I had a bug :P You'll find him at 457.29,88.94,225.65 actually IN Kelethin. This'll update the Welcome to Haven timeline and get you going for faction.
Edited, Oct 14th 2010 8:18pm by Debbani