Jews in Naples and the Kingdom of the Two Sicilies
I have not read Charles Henry Lea’s The inquisition in the Spanish dependencies (https://archive.org/details/inquisitioninspa00leahrich), which includes Naples and is available for free download. More recently Peter A. Mazur wrote The New Christians of Spanish Naples 1528-1671: A Fragile Elite. Mazur references two articles by Maria Sirago. Nino Masiello, a journalist, has written IL MERCANTE – L’avventura di don Miguel Vaaz, un portoghese nel regno di Napoli . The MolaStoria site is also useful. http://www.molastoria.altervista.org/
Jews were expelled from Naples in 1541. Sirago speculated that the three Vaaz brothers arrived there after the Spanish conquest of Portugal in 1580. I think it is more interesting that the Spanish Governors were from the Galician counts of Lemos, a family presumably well-known to the nexus of New Christian merchants straddling the Portuguese-Galician border.
The Sanchez and Vaaz (presumably Baz / Baez / Vaez / Vaz) families seem to have been the leading New Christian families here. Other familiar names that appear include Mendes / Mendez and Rivera / Riveira. Miguel Vaaz, later (?) Count of Mola, arrived in the Kingdom circa 1612. Miguel Vaz de Andrade (presumably his Spanish name) is reported to have saved Naples from famine by importing grain from the Balkans. I suspect there were trade links between Mola and Ragusa. Duarte Vaaz was arrested and tried in 1657. Mola may refer to Mola di Bari, an Adriatic fishing port facing Albania.
It is believed that the earlier community left during 1492 and eventually ended up in the Ottoman Empire. There are synagogues in Greece and Turkey names for cities in southern Italy.