Of course, you could potentially mod or cheat the game in some way, to allow you to get nobles at-will, but where’s the fun in that. hunting them down is so much more enjoyable. The downside is that either of the two options for finding nobles in Mount and Blade II: Bannerlord.
There are two locations you can find nobles in Bannerlords: Wandering around the world in immense caravans or a lords’ hall, both require some traveling. The nobles in Mount and Blade II: Bannerlord will most often be reliably found in the Lord’s hall, which itself is found in the largest settlements in the game world, look for the castles. But if you’re up for some adventures, there’s another option.
Anytime you encounter a roving army out in the field, assuming they’re not an outright enemy that will attack on sight, you can approach and interact with them. Lucky for you, there’s no need to wander aimlessly. Holding down the Left-Alt key on your keyboard while on the open-world map will allow you to see at a glance which armies nearby are led by high-ranking faction members. There are several main factions and a whole host of smaller sub-factions in Mount and Blade II: Bannerlord, so you have no shortage of lords and ladies to talk to. And yes, these noble also represent various potential recruits and ransom targets later in the game when you’re playing politics, keep an eye on them.
There are even some quests that will require you to make contact with various nobles. One such quest has the player seeking out and speaking to 10 nobles in Mount and Blade II: Bannerlord across the map. This quest is fairly early in the game’s story, so the developers have given players some more tools to facilitate finding nobles.
Open up the in-game encyclopedia and flip to the menu for in-game NPCs. On the page for each entry of a noble or faction member, the game will show their last-known location. Traveling around tracking them will take some time though. So while you’re trekking across the land, feel free to stop in smaller villages along the way to complete quests, recruit new troops, gain experience points, and acquire more grain and food to feed your forces.