P.T. ..., showman who popularized the circus (6)

I believe the answer is:

barnum

(Other definitions for barnum that I've seen before include "19th century US showman" , "US showman who popularized the circus" , "US showman, Bailey's partner" , "One putting on a show" , "US creator of "The Greatest Show On Earth"" .)

I've seen this clue in The Irish Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.