Jan Karbaat Dutch fertility doctor who used his own seed to impregnate patients. He has 11 children from his marriage, 22 donor children which were DNA-matched before his death, and an additional 49 children which were DNA-matched via sibling DNA matching after his death. 77: Chulalongkorn (Rama V)
https://en.wikipedia.org/wiki/List_of_people_with_the_most_children