Gennaro's years are taken from gw.geneanet.org. According to that site, Gennaro & Teresa had six children: Camilla, Carmela, Cristina, Crescenzo, Casimiro, and (running out of names beginning with C), Felice.
Birth date from Geni.com
Before 1820, the name was usually spelled Siracusa, with a C. Around 1820 the spelling Siragusa began to appear. My great-grandfather spelled his name Mario Siragusa, as did his first son Giuseppe. But after coming to America in 1914, all the kids born here (starting with my grandmother born in 1914) spelled their name Siracusa.
On Francesco's marriage certificate, his mother is listed as Agata Lauria. Natala's mother is also listed as Agata Lauria! On a public family tree, Francesco's name was incorrectly listed as "Francesco di Paola." Probably this was a misreading of "Francesco defunto," on Francesco's daughter Giuseppa's death certificate.
Antonio's first wife was Rosa Cardello (married 1751, died before 1764).
Rosaria was Antonio's second wife.