No, I can't find it. What is it?
asdf, one moment.
EDIT:
There would a handful of personality "Facets" which each NPC would have. I propose Forgiveness, How likely the character is to forgive transgressions; Aggressiveness, how aggressive the character is; Duplicity, how often the character uses trickery to het what s/he desires; Faith, how likely the character is to believe that other characters will follow through in their deals; and Frugality, how far the character will go for money/power/etc.
Each facet would be given a random value from 0-1000.
If an NPC has an exceptionally high value for a certain facet (750-1000) or an exceptionally low value (0-250), their descendants will be more likely to have a higher or lower value.
The facets that I proposed would not work in an actual game, I am only proposing them as a starting point to improve upon later.