The Irish Prime Minister Bertie Ahern's eldest daughter Georgina is expecting a baby with her husband, Westlife singer Nicky Byrne.
In a one-line statement, a spokesperson said the new arrival is due next summer.
It will the first grandchild for Taoiseach Bertie Ahern and his separated wife, Miriam Kelly.
Their youngest daughter Cecelia is a best-selling author.
The statement said: "Nicky and Georgina Byrne are delighted to announce that they are expecting their first child next summer."
The couple wed at Wicklow Registry Office, Co Wicklow in August 2003 and their union was blessed four days later at the Roman Catholic Church of St Pierre et St Paul in Gallardon, Eure-et-Loir, France.
The couple attended the annual conference of Mr Ahern's ruling Fianna Fail party in Dublin on Saturday night.
Georgina, 27 and Nicky, 28, appeared briefly on RTE television as they hugged Mr Ahern at the back of the Citywest Hotel hall before he made his televised address.
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