What is the birthplace of John Garrett Skelly born 5 February 1919?

Question

Looking for parents of John Garret Skelly. His brothers were Robert and William. Sister was Maude. I need a birth certificate for John Garrett Skelly. He was born 5 February 1919 somewhere in North Ireland. He served in the RAF during World War ll. He married Joan Eksteen from Oudtshoorn, South Africa.  Their first child, Kevin John, was born in Southampton, England.

Answer 1

Ireland,Civil Registration Births Index,1864= 1958.Born in Banbridge,Ireland.

But does not give parents names.

Answer 2

Here's his profile - https://www.wikitree.com/wiki/Skelly-776 with link to birth record