If apparent nepo kids from families called "king" do stupid things, and they potentially link to much, much bigger scandals, then it is worth pointing out - because there might be an important pattern.
There's a search term match in the Epstein files for family names of both CEO and CFO worth investigating, and people like you show up and spend a lot of effort on invalidating it using cognitive biases.
Obviously those guys are not sharing a lot of information, or the investigative blog posts (e.g. this thread) wouldn't need to exist.
As you said, for "Negus-Fancey" to appear, some "Negus" husband needs to have a "Fancey" wife whose last name would otherwise been lost.
"Negus-Fancey" as double-barred name depicts a family of movie producers/directors [1] which puts them into same role of the same industry as many other Epsteins [2].
[1] https://www.imdb.com/find/?q=Negus-Fancey
[2] https://www.imdb.com/find/?q=epstein&s=nm