First child for Sean Quinn Jnr and Karen
The baby boy is the first child born to Mr Quinn's only son Sean Quinn Jnr and his wife Karen Woods.
Sean Patrick Quinn, weighing 8lb, was born at 2am yesterday.
Mother and baby are said to be doing well.
Baby Sean brings to five the number of grandchildren in the Quinn household, with another grandchild expected in July.
Mr Quinn's daughter Ciara, who is married to solicitor Niall McPartland, is expecting their fourth child this summer.