Did De Sylva Brown and Henderson write Sonny Boy for Al Jolson?

That's a great question! While the song "Sonny Boy" is indeed famously associated with Al Jolson, it's not actually credited to De Sylva, Brown, and Henderson.

Here's the breakdown:

* "Sonny Boy" was written by Ray Henderson (music) and Lew Brown (lyrics). They were part of the songwriting team of De Sylva, Brown, and Henderson, but the song itself was not written by all three of them.

* Al Jolson popularized the song, and it became his signature tune. He recorded it multiple times, and it was featured in his 1928 film "The Singing Fool," which solidified its iconic status.

So, while De Sylva, Brown, and Henderson were a very successful songwriting trio, "Sonny Boy" was a collaboration between just two of them: Ray Henderson and Lew Brown.