One of the best things about the sixth edition Bretonnia army book is the heraldry guide. Not only does it give the painter a good idea of how to vary up the limited palette of heraldic colours but the names of the knights the heraldry belongs to make great background hooks.
Amongst suck fantastic names as Piers the Intrepid, Matthias the Villainous Warden and Mogen of the Flame is Graeme, Friend of Dwarves. Now, that's just too perfect for my purposes.
In my mind, Graeme gained his name as an ambassador to the Dwarven holds in the Grey Mountains. He's long retired from that position and now he's a Questing Knight because I don't see someone named “Friend of Dwarves” armed with anything other than a great axe.
Him being on the Quest gives me an idea. Now, obviously, he needs a few old friends in the Dwarf throng and I think his oldest and best friend absolutely has to be the champion of my Slayer regiment. That way they're both on quests of honour, one hopeful and one fatalistic, nice way to contrast the characters of the two armies.