Not only was William a loyalist, he was the last colonial governor of New Jersey and was one of the chief leaders of the loyalists. His early years and heritage are just crazy stuff, even for our times.
There is a good reason you've not heard about ol William before, because his story and relationships are totally nuts. My lord, the conflicts of interest are at actual war.
Imagine if Putin's bastard son was one of Zelensky's most important generals.