https://www.bbcearth.com/news/what-are-the-effects-of-inbreeding
https://en.wikipedia.org/wiki/Inbreeding#Royalty_and_nobility
https://quillette.com/2025/12/03/a-brief-history-of-inbreeding/
https://3billion.io/blog/history-and-genetic-diseases
Sometimes all that pumping, ejaculating and inseminating just has to be kept in the family.
https://biomedicalodyssey.blogs.hopkinsmedicine.org/2023/08/habsburgs-all-in-the-family/
https://en.wikipedia.org/wiki/Incest_in_ancient_Egypt
https://en.wikipedia.org/wiki/Incest#Prevalence_and_statistics
