Quiz

Few people know the name.

Taken out of context.

Few people know the name of the first king of England from the Norman dynasty.

His name is quite well-known, but associating the name with the fact that he was the first king of England from the Norman dynasty is something not everyone can do.
I'm not writing the answer yet, maybe someone will write it, someone who knows, and didn't just Google it. Although I'm not sure. But it's not that difficult; I just don't remember anything.