hear is some born Belfast
CORBITT, Samuel   Birth
   Gender:   Male
   Birth Date:   11 Aug 1868   Birthplace:   358, Belfast, Ant, Ire
         Recorded in:    Antrim, Ireland
         Collection:   Civil Registration
   Father:   William CORBITT
   Mother:   Margaret BICKERSTAFF
CORBETT,    Birth
   Gender:   Female
   Birth Date:   27 Nov 1867   Birthplace:   343, Belfast No 4, Ant, Ire
         Recorded in:    Antrim, Ireland
         Collection:   Civil Registration
   Mother:   Matilda CORBETT
CORBITT, Robert   Birth
   Gender:   Male
   Birth Date:   7 Feb 1868   Birthplace:   367, Belfast No 4, Ant, Ire
         Recorded in:    Antrim, Ireland
         Collection:   Civil Registration
   Father:   Hugh CORBITT
   Mother:   Mary Jane MCCLEERY
CORBITT, David   Birth
   Gender:   Male
   Birth Date:   7 Sep 1869   Birthplace:   395, Belfast No 6, Ant, Ire
         Recorded in:    Antrim, Ireland
         Collection:   Civil Registration
   Father:   Thompson CORBITT
   Mother:   Jane ORR
I know its not ideal but you might be able to track back with these some time its the only way  if I can help just get back to me 
audrey