Maureen Haughey, the wife of former taoiseach Charles Haughey, has died aged 91.
Mrs Haughey passed away peacefully after a short illness at Dublin's Mater Hospital early this morning.
She was the daughter of Seán Lemass, also a former taoiseach.
Her son Seán Haughey, Fianna Fáil TD for Dublin Bay North tweeted the announcement, saying she was "truly a remarkable woman".
So sad to announce that my mother passed away peacefully this morning-A truly remarkable woman.May she rest in peace pic.twitter.com/aJRIoHPUJi— Sean Haughey (@sean_haughey) March 17, 2017
Fianna Fáil leader Micheál Martin paid tribute to Mrs Haughey, saying in a statement: "On behalf of the entire Fianna Fáil organisation across the country, I want to extend our deepest sympathies to the Haughey and Lemass families on the passing of Maureen Haughey.
"As the wife of the late Charles Haughey and daughter of Seán Lemass, Maureen was a wonderfully warm, dignified and intelligent woman.
"She was a tower of strength to her late husband former taoiseach Charles Haughey and loving daughter of former taoiseach Seán Lemass. Throughout her distinguished life she witnessed some of the major turning points in Irish history."