The Passport Office said it has notified international border authorities about the issue.

Individuals with surnames such as O’Connor, O’Sullivan, or D’arcy have been left unable to proceed with applications using their legal names.

Mr Parker held an Irish passport for three decades but only recently obtained a PPS number.

A mystery man who has been charged with allegedly using passports in the names of two dead babies has been positively identified and has an FBI arrest record from 1970

The man, who speaks with an American accent, was arrested in Cork passport office last month when he was making an application.