Mullally/Dixon

I am researching Dixon /Mullally .

Patrick Mullally married Mary Harpur, they lived in Enniscorthy, their daughter Mary Eliza Mullally married  PTE James Dixon in parish of St Michael Gorey, it stated James Dixon was a native of Gorey but lived in Queenstown as he was a soldier. on the 15th  February 1917. They had 5 children,

Moira/Mary, Anna Maria, Thomas,

James  born 15 July 1921 in Drumgoold Wexford

Patrick born 24th February  1924 in  Drumgoold Wexford.

Mary Dixon my grandmother died  on 10 march 1924 a month after Patrick was born.

I have not been able to find birth certificates for of the  three children one  is my mother Anna Maria, I am assuming this is her correct name, the children were all  put into industrial schools except for Thomas  who i believe lived with the Mullally's and took there surname. I do not know what happened to  my Grandfather  James Dixon.

I have contacted the Registary Office in Ireland and they informed me that they could not find birth certificate for my mother Anna Maria, although i have found a note saying that she was Baptized I do not know where this took place?

My mother died in 1959 when i was five and I have been researching for about 25 years to no avail or met with brick walls. i would be grateful if anyone has any knowledge or information to help me learn my mother and family history thankyou