SOLVED: kids book: 3 or 4 kids, two of them twins named after italian food, a baby, and something to do with switzerland [s]

[Tara ♪]

Hi, guys! I'm looking for a book that I believe is about 4 kids, the youngest a girl, the middle brothers being twins who both have the same first name (i believe it's barney) and they have long middle names that are italian foods. They find a baby... can't remember much more about them. Also, there's this rich guy whose son and wife are in Switzerland, only he thinks they're dead (they guy and his son have the same first name as the twins) But the guy's wife has divorced him, with him not knowing it. And two people (I'm pretty sure that they're the four kids' parents) freeze to death on mount everest. And the rich guy's son comes to the U.S. for some reason and OF COURSE everyone is happy, and I believe that rich guy takes in the four kids and the baby. I believe her name was ruth and the rich guy named a candy bar after her?... I'm really not sure, it's been years since I've this book so my thoughts are all muddled. I would love to find its title, though, so it would be really nice if someone could help me! Thank you!

[Sherri]

Definitely "The Willoughbys" by Lois Lowry.

[Tara ♪]

Thank you! Wow, I'm surprised that was so quick! Awesome group, and thank you Sherri!

[Cheryl]

The Willoughbys for the link. I'll shelve this, too.