I have put the births in chronological order. I have found another two original records for you at the antenati site and have added the links here. I have run out of time so will leave you to find the others. There are indices and they are in alphabetical order which is very helpful. As you can see two more syblings are recorded to have died as children.
BIRTH 1828 – ANNA MARIA VACCA
spouse:Luisa Alefrica
• child:Anna Maria Vacca
• NameAnna Maria Vacca
• Event TypeBirth
• Event Date13 Aug 1828
• Event PlaceQuartiere San Ferdinando, Napoli, Napoli, Italy
• GenderFemale
• Father's NameDomenico Vacca, Age 31, Facchino (Porter)
• Mother's NameLuisa Alefrica, Age 20 Filatrice (Cotton Spinner, Seamstress)
• • GS Film number1767032
• Digital Folder Number004906665
ORIGINAL RECORD:
http://www.antenati.san.beniculturali.i ... _00393.jpg
DEATH RECORD – 1830 – ANNA MARIA VACCA
• spouse:Maria Luisa Alefeca
• child:Anna Maria Vacca
• NameAnna Maria Vacca
• Event TypeDeath
• Event Date23 Jan 1830
• Event PlaceQuartiere San Ferdinando, Napoli, Napoli, Italy
• GenderFemale
• Age1
• Birth Date
• Birth Year (Estimated)1829
• BirthplaceNapoli
• Father's NameDomenico Vacca,
• Mother's NameMaria Luisa Alefeca,
• Entry Number
• GS Film number1808945
• Digital Folder Number004906713
BIRTH 1833 NUNZIO VACCA
• spouse:Luisa Alefica
• child:Nunzio Vacca
• NameNunzio Vacca
• Event TypeBirth
• Event Date25 Mar 1833
• Event PlaceQuartiere San Ferdinando, Napoli, Napoli, Italy
• GenderMale
• Father's NameDomenico Vacca, Age 35, Facchino (Porter)
• Mother's NameLuisa Alefica, Age 24 Filatrice (Cotton spinner, Seamstress)
• Entry Number
• GS Film number1807719
• Digital Folder Number004906676
ORIGINAL RECORD:
http://www.antenati.san.beniculturali.i ... ewsIndex=0
BIRTH RECORD – 1838
spouse:Luisa Aleseca
child:Giuseppe Vacca
• NameGiuseppe Vacca
• Event TypeBirth
• Event Date19 Mar 1838
• Event PlaceQuartiere San Ferdinando, Napoli, Napoli, Italy
• GenderMale
• Birthplace
• Father's NameDomenico Vacca
• Mother's NameLuisa Aleseca•
• GS Film number1807723
• Digital Folder Number004906679
BIRTH 1840 MARIA TERESA VACCA
• spouse:Luisa Alefeca
• child:Maria Teresa Vacca
• NameMaria Teresa Vacca
• Event TypeBirth
• Event Date26 Sep 1840
• Event PlaceQuartiere San Ferdinando, Napoli, Napoli, Italy
• GenderFemale
• Father's NameDomenico Vacca
• Mother's NameLuisa Alefeca
• GS Film number1807725
• Digital Folder Number004906681
• DEATH RECORD: 1843 MARIA VACCA
• spouse:Luisa Alefeco
• child:Maria Vacca
• NameMaria Vacca
• Event TypeDeath
• Event Date05 Sep 1843
• Event PlaceQuartiere San Ferdinando, Napoli, Napoli, Italy
• GenderFemale
• Age3
• Birth Date
• Birth Year (Estimated)1840
• BirthplaceNapoli
• Father's NameDomenico Vacca
• Mother's NameLuisa Alefeco
• GS Film number1809518
• Digital Folder Number004906718
1843 BIRTH RECORD – VINCENZO VACCA
• spouse:Luisa Alefeco
• child:Vincenzo Vacca
• NameVincenzo Vacca
• Event TypeBirth
• Event Date02 Feb 1843
• Event PlaceQuartiere San Ferdinando, Napoli, Napoli, Italy
• GenderMale
• Father's NameDomenico Vacca
• Mother's NameLuisa Alefeco
• GS Film number1807908
• Digital Folder Number004906682
Good luck
Angela