When the brothers were quite young, probably under five years of age, Lady Wilde took them to stay at a farmhouse in the vale of Glencree about fifteen miles from Dublin. During their stay she met a young convert Catholic priest, Father Lawrence Fox, and asked him whether she could bring the two children to Mass. Soon afterwards, she requested that Oscar and Willie be baptized as Catholics. Father Fox duly obliged.
–Joseph Pearce, The Unmasking of Oscar Wilde. In praise of infant baptism: This is very End of the Affair.