[dghf]

And similarly 'O' for 'descendant of' in Irish surnames (e.g O'Neill).

[layer8]

Also the famous greek hunter O’Ryan. ;)

[thaumasiotes]

There is an unusual Chinese family name, 欧阳 ouyang, which is sometimes anglicized into the form O'Young.

[HeyLaughingBoy]

Like O'Bama?

[fuzz_junket]

I love O'Bama, the famous O'lympic athlete.