Oh, it's a character and a dynasty, not two characters?
- Is the dynasty defined in a file in the correct folder for that, and does it have a unique id?
- Is the id 212850 already used by another character (that's loaded prior to this character; you'd have other issues if they were loaded later...)? Vanilla has characters with higher ids, so it could conceivably be taken if that character hasn't been removed.
- Are you starting when that character should be around (1066.1.1 or later)?
- Are you checking for them widely enough? Unless you've landed them somewhere, they're not necessarily going to be in a specific place if defined without an employer, so e.g. just checking realm characters might not be enough.
- Are you certain you've not messed up anything else? Extra/missing brackets/quotes/equal signs/etc. somewhere earlier in the relevant files can mess things up.