Three-character surname transliteration:
鲍 (bào, "Bo-/Pow-") +
尔 (ěr, connecting "-r-/-l-") +
斯 (sī, "-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).