There's a family of Reggioni boys in Marylebone in 1911 running a restaurant - they're Swiss. Can't find them on Familysearch to give yuo a link. Not Giosuo, but a Eugene the right ageAny clues on the marriage cert - witnesses, occupation?
Possible death 1965 Essex South Western aged 79 so year of birth c 1886.Cathy
https://discovery.nationalarchives.gov.uk/details/r/D4817143
I've hunted down Italian birth certificates and church baptisms before but you need to have an idea of the province and the commune to get anywhere. Hunting on other sites hasn't given me any clues.