That’s so interesting that you found out about your Aunt. I hope you are able to learn more. I have no clue about how far back bipolar runs in my family. All I know is that My mom has bipolar 1. As far as I know she’s the only one out of her 6 siblings that got it. Though one of her brothers and her sister are both off and on again drug addicts and alcoholics. I’m the first one out of my moms 6 kids to have an episode with bipolar 1, but my two baby sisters both suffer depression and take meds. So it could be possible it morphs into bipolar but God I hope not!!!! Then I have 1 first boy cousin who has had it since he was about 19. I’m pretty sure he has bipolar 1 also. I don’t know if anyone else in my family that has anything.