A delegation from the Stardust Families campaign is meeting the North's Deputy First Minister in Belfast this afternoon.
48 people lost their lives in the fire, which happened on St Valentine's Day in 1981 at the Stardust venue at Artane in north Dublin.
Three of the victims were from Northern Ireland.
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Relatives of those who died are calling for a new inquiry into the cause of the blaze.
Antoinette Keegan, who lost two sisters in the fire, wants Martin McGuinness to support their campaign:
