Ay, and I just had Amos Luzzatto's wikipedia up too. It was Joseph Tydings entry that has the Luzzatto grandchildren, which I was looking for.

For the longest time, all three Luzzatto children on that Tydings page had their last names misspelled (all in different ways, too...like Luzzato, Luzatto, Luzattoo). I was pretty convinced it was to hide them from searches, like the Obarna/Clint0n ones). It's fixed now, but it would be interesting to see when it was edited.