Coincidence is probably the reason why this formed part of a BBC news story on the 6th August 2003.
It was reported that Byrne and Ahern arrived at the registry office separately in order to protect a $1m (£622,000) deal with celebrity magazine Hello, which will publish photos of this weekend's ceremony.
The Irish prime minister's other daughter, journalism graduate Cecilia, also recently hit the headlines after securing a $1m (£622,000) book deal for her debut novel and its follow-up.
Please note that Hello magazine is a Barcelona owned (euro) and London based (sterling)magazine . But I suppose thats probably another stamp duty issue.