Hello Gail,
I have researched your William Angelo (he was my great great grandmother's little brother) and all of Innocenzo's children. They were all born in Carshalton, Surrey.
Innocenzo came to England in 1826 and resided in London, Clerkenwell? until he married his 1st wife Sarah King of Carshalton in 1827.
William Angelo is from Innocenzo's 2nd marriage (to Susan Daniels). After William's marriage to Martha Sarah Ann Cooke in 1870 they moved to Leatherhead. You can find him on the 1871 census living at The High Street (no door number).
I hope this helps.
Lei