Wikipedia: Larry Hillblom
Hillblom’s mother, brother, and half-brother initially refused to submit their DNA (which could have also been used to determine paternity of the various children). Investigators then decided to use a different tactic: how did the DNA of the children compare with each other? Since the women were in different countries, if their children shared certain DNA markers, they’d almost certainly have the same father. However, investigators in the case were eventually able to convince Hillblom’s mother to supply a sample of her DNA in exchange for $1 million and a French villa.[3]
It was ultimately determined that a Vietnamese child, 2 Filipino children, and a child from Palau were fathered by Hillblom.
In the final settlement, each of the four children received $90 million (about $50 million after taxes and fees), while the remaining $240 million went to the Hillblom Foundation, which followed Hillblom’s wishes and donated funds to University of California for medical research.