The Taoiseach has described John Hume as a "great hero" and a "true peacemaker".
Micheal Martin said during the darkest of times throughout the Troubles - he kept hope alive.
He said 83-year-old's vision saved this country.
The architect of the Northern Ireland Peace Process passed away this morning at a nursing home in his native Derry following an illness.
His family have said his loss will be deeply felt with a memorial to be organised at a later date.
Taoiseach Micheal Martin says he was a hero.
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