The article does finish with Hob, Daw, Wat, and Gib. But most of the names highlighted are ones that are still in use. (I personally also have found that a lot of people don't realize Harry is a nickname for Henry, like anyone who wasn't alive for JFK doesn't know "Jack" is "John")
Does no one know Shakespeare any more?
I see you stand like greyhounds in the slips,
Straining upon the start. The game's afoot:
Follow your spirit, and upon this charge
Cry 'God for Harry, England, and Saint George!'Off-topic: I wonder if this the first recorded use of the phrase “the game’s afoot”?
But if you're going to do it, the one time it's really misplaced is when you're claiming the author of the article didn't read it.
This sets up the main point, which is that the pattern holds so reliably that when you meet a patronymic surname you can often infer the existence of a nickname, even when it's one you don't recongize.
Hence the title.
Anyhow, I really enjoyed the article and learning about the origins of surnames, e.g., I didn’t know that “Peters” should be understood to be in the genitive case and I’d never have associated the surname Dixon with being “Richard’s son” – even though I’m familiar with Dick as a nickname for Richard.
¹ Other commentators have pointed out that Prince Harry was actually christened as Henry.