|A Wiki of Ice and Fire.|
- A knight long in the service of a noble, discharged because of his age in favor of a much younger man, or finally retiring to enjoy his golden years on a ranch or something. Regardless, he grows tired of the quiet life and eagerly takes small jobs: escorting merchants, missionaries and the like, tracking down bandits, rescuing the odd farmer's daughter. These small jobs eventually grow until he's recruited to take on a big mission.
- Alternatively, he could be the sole survivor of an ill-fated venture, perhaps leading to the deaths his lord and his retinue at the hands of a rival noble. He leads a life of a shamed knight, sulking from place to place, taking one of the aforementioned jobs to buy his drink. Another idea could be that he was so ashamed of what happened, that largely gave up the knightly life, becoming a migrant laborer, traveling from place to place, doing odd jobs here and there, but refusing to take up the sword again.
Oh, the possibilities.