I doubt that the army would have recorded a place of baptism. It would be either place/parish of birth or place of residence, depending on the question.
Incidentally there is a Medal Index Card for Pte W Murphy, 7743, 2/Royal Irish Rifles which shows that he also served with the Labour Corps, 411083, 2 A.E. Company. 1914 Star, qualifying date 6.8.14