Ah ha whelp being super organized and very meticulous note taking are your friends in this kind of endeavor! 

A detailed explanation of my system under the cut cause I cant do anything simply.

Starting off each household is assigned a number, they are always this number and it is also the play order in rotation. So Spencer-Kim-Lewis household is #1 and that keeps going all the way to the Lynx household that is #29.

In addition to that each and every sim has been separated by generation and gender. So I have a table for Generation 1 female, Generation 1 male etc…

In each of these separate tabs I keep track of the following items for each and every sim(not counting pets):

• Household Born in
• Household lived in as an adult
• Heir (Y/N)
• First Name
• Maiden Name
• Last Name
• Sexual Orientation
• Traits
• Bad trait modifier(if they roll three “good” traits I roll a bad trait for them that comes to play in their story somehow)
• Grade as a Child
• Grade as a Teen
• Relationship Type (single, boyfriend/girlfriend, married @ YA or Married @ A)
• Partner’s Name
• Career path and branch
• # of pregnancies/adoptions(for women and/or Gay sims)
• Children’s names
• Skills maxed
• YA Chance Card (story elements rolled at each adult stage)
• A Chance Card 

  (story elements rolled at each adult stage)

• E Chance Card 

  (story elements rolled at each adult stage) 

Lastly I also keep track of each household and its members on my blog with links to each household’s story from the beginning which I check and reread prior to playing the household just to make sure I’m not forgetting anything.

So yeah that’s my crazy system in a nutshell and probably more that you wanted to know, but hey that’s how I roll, so let me know if you have any questions!