Minister for Higher Education Simon Harris announced the birth of his second child today.
Mr Harris and his wife Caoimhe welcomed baby boy Cillian at the National Maternity Hospital.
He said the couple's daughter Saoirse, 2, is "delighted" to be a big sister.
He wrote on Instagram: "Today we welcomed baby Cillian into the world. Caoimhe and baby doing great and Saoirse is delighted to be a big sister and looking forward to meeting him soon."
He added: "Thanks so much to all staff in Holles Street. I will now take paternity leave for a few weeks to get to know this new little man."
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