OOC: Good questions, guys! Here's how I'm going to work the Knowledge questions. Since Kolarred and Zook are both from Karnnath (or have at least spent most of their time here), then their two Knowledges will apply so long log as they're in Karrnath. Zook's Knowledge - Local will encompass everything you might find out from being a commoner walking the streets (info on people and famous personages, places in the cities and towns, small amounts of fairly well-known historical info etc.). Kolarred's Knowledge - Nobility will encompass everything about Karrnath's merchant class and up (Dragonmarked houses, city guards and military groups, famous personages, royal lines etc.) For Luthal... although he's originally from Droaam, I've been going under the assumption that he's been working with Tomanta (and thus for House Tharashk in Karrnath) for a while now, and thus I'll also let him use his Knowledge - Nature for some Karnnath-specific info rolls as well (locations in Karrnath, trails etc.) I figure as a quality merc, he's been studying hard to learn all he can about the areas he's currently working in. Hope this helps!
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The four gentlemen take a few moments to think about that symbol that Zook saw to see if anything rings any bells. The fact that the group has their own colors seems to indicate that they are a military, adventuring, or mercenary group of some kind.
Luthal -10 penalty ((Know Nature [19] + 4 - 10 = 13 / DC 20))
Zook -4 penalty ((Know Local [13] + 4 -4 = 13 / DC 20))
Kolarred ((Know Nobility [19] + 6 = 25 / DC 20))
Kolarred thinks hard because he's sure he remembers something about this. Suddenly it occurs to him an article he read in the Korrenberg Chronicle about a year or two ago in their Entertainment section. It was about a mercenary company that was having their exploits documented by a minstrel who was travelling with them as their performed the jobs they took. The group was like the Black Talon Company, or Steel Talon Company... something like that.
The article seemed to indicate that because of the songs and epics this minstrel created for them, the Company has become one of (if not THE) most famous, popular and successful merc company in Khorvaire. Of course, the fact that Kolarred barely remembers the article and none of the other three have ever heard of the Black Talon or Steel Talon merc company seems to indicate that the minstrel really hasn't done a very good job at promotion since the article was first published. Either that, or else the minstrel just ain't that great a song or poetry writer.