The longest ever family legacy I had was back in the days of Sims 2 where I managed to go up to eight (8) generations of the Scott family. That being said, they always only ever had one child each so I was able to focus a lot of my time on them to ensure all their needs are met. Currently with my new legacy family (The Lehman's) I've been playing on the long lifespan and have had more than one child for each heir. So far I am up to the third generation, the founder died a while ago now and one of the second generation children has just died of old age leaving me with the heir and her three children (One YA, Teen and Toddler). They also have a cousin who doesn't carry the family name living as well, he's a student at Foxbury at the moment.
The good thing is because I keep my family in a club affectionately dubbed the Lehman Legacy they are able to keep in touch and get together even if they don't all live in the same house anymore. :smile: Big kudos to those of who who have played their families for so long, it's amazing!