[robjwells]

Even among current and recent MPs and Lords, we've had: O’Brien (5), O’Donnell, O’Halloran, O’Hara (2), O’Mara, and O’Neill.

https://members.parliament.uk/members/commons?SearchText=%27...

[microtherion]

And if the "no punctuation" mandate were to be taken seriously, it would also affect innumerable hyphenated names.