Tiny anecdote - it was only after being a parent for a decade or so that, when doing family history, I realised that my dad's parenting style -- which influenced my own so much -- was affected by being essentially fatherless; he had no direct model to base his own parenting on. WWII affecting children's upbringing ~70 years later.

I think he did a great job when I was younger, but we haven't maintained a strong bond as adults (which is my fault as much as anything); something I want to try and change with my own children.