Birth of Bridget Barrett

Hi,

I am looking for the birth registration of my 2X Great-aunt, Bridget Barrett. Her parents were Bridget Irwin and John Barrett and she had two sisters, Mary Ellen and Margaret Ann. Bridget's middlename was Agnes. She was born in Mayo I believe. Mary was born on the 11th October 1924 but Margaret and Bridget I am not too sure. I think Margaret was born in 1927. Bridget was said on some records to be born in 1925 but i t listed her as being born in February which doesn't make sense due to Mary's birth date.

Thank you!