What Could He Have Had?

Here was a fun one to watch the Pirate get into with one of our heroes. 
We are seven handed, including The Pirate in middle position, and four players witness the flop of Q, 8, 4 all clubs that was straddled and limped in. $8 pot. 
Small blind leads out for $7, straddle calls and so does Pirate.
Ad is the Turn. SB checks, straddle bets $15, Pirate calls, and SB folds.
4h is the River. Straddle shoves for $32.. the Pirate muddles and folds..
It was fun to watch and I had to beg to find out what our Hero had.. I had a range, but had to say that in order to win the pot, the Pirate would have needed a really strong holding.