In Lehi's dream, who in his family ate from the happy fruit tree?

His wife Sariah, and his sons, Nephi and Sam.

(But his sons, Laman and Lemuel, refused to eat from it.)

I looked to behold from whence it came; and I saw the head thereof a little way off; and at the head thereof I beheld your mother Sariah, and Sam, and Nephi; and they stood as if they knew not whither they should go.

And it came to pass that I beckoned unto them; and I also did say unto them with a loud voice that they should come unto me, and partake of the fruit, which was desirable above all other fruit.

And it came to pass that they did come unto me and partake of the fruit also.1 Nephi 8:14-16