You can also lose renown over time by not doing any or enough of the above. Others will admire your quick tongue and you will gain relation. However, depending on their personalities, you may lose relation and some will want to duel you, or even worse, send their army at you.
The other lords and rulers also have renown, which over time, assuming you are relatively successful, you will surpass. Your character's renown is basically how well known they are throughout Calradia or Eastern Europe.
Renown will be earned by your character as you progress through the Mount&Blade games.
