Three-character surname transliteration:
鲍 ('Bo-/Pow-') +
尔 (connecting '-r-/-l-') +
斯 ('-s/-z'). The pattern fits English Powers, Bowers, Bowles, and similar.
鲍 is also a real Chinese surname (so a Chinese person could plausibly be named
鲍尔斯, though it would be unusual).