Although the couple remained very quiet on their big day, Irish Independent can exclusively reveal that the family spent a six-figure sum to take over the Tipperary hotel.

Prices for the hotel’s 42 rooms range from an estimated €500 per night to €1,200 for private suites.

A source told the Sunday Independent: “The couple have booked the entire venue. You can’t even go there for a pastry and a cup of tea today. It’s the celebrity wedding.”

It is assumed that guests for today’s celebrations arrived at the venue on Friday evening.

The family had flown to several luxury destinations abroad, including Italy and Portugal, before finally settling on the Tipperary venue after a six-month search.

After deciding to host an Irish wedding, Erin told her followers on her social media page: “I think home is calling us because of the logistics of everything with Harzo (her son) and the stress we put ourselves under. Less stress for us on our big day was the deciding factor.”

Built in 1730 for the Archbishop of Cashel, the building has hosted A-list stars such as Richard Burton and Elizabeth Taylor over the years and recently underwent a dramatic transformation under the direction of Susan Magnier.

The interiors are by London-based Emma Pearson and the gardens were restored and redesigned by landscape architects Del Buono Gazerwitz.

The interior has been described as “sophisticated,” “no bling,” and “ultra-luxurious.”

Erin has previously described how much her brother Conor has spoiled the family, calling him “the most generous person I know.”