One Shabbat, toward the end of the morning service, Tova Mirvis was stricken by a debilitating headache, in which “the pain concentrated along the line where my hat met my head.”

There are the rich and there are the very rich, and while the very rich exhibit varied demographic characteristics, the family at the center of Jenny Jackson’s sparkling debut novel, “Pineapple Street,” is of a highly specific sort: the pedigreed, never-touch-the-trust-fund-principal, tennis-playing, old-money-Brooklyn WASP.