That sounds like literary gold right there, hidden histor and cultural/spiritual exploration with a parallel historical sequence following the ancestors who fled from Iberia and immigrated in search of safety, opportunity, or both. Well maybe not literal gold, maybe a few rabbis and Jewish grandmothers will buy a few dozen to a few hundred copies and that's it. But still, it's such cool material. It ought to move a few more copies if it's marketed as YA or genre, maybe with crossover appeal to Hispanic readers esp. with a good Spanish translation. Or alternately a really trashy one with heaving breasts on the cover.

Why aren't you interested in working for the SPLC anymore? They seem to do good work, though working for a nonprofit... yeah (http://workingatanonprofit.tumblr.com/).