Baptizism certifcate in Balla area

I wonder how I get a baptizism certifcate for my great grandfather it shows he was baptized in or near Balla,  Dec. 1845. The following information is.                                                                                                                                                                                       

Thos Devanny Ireland, Catholic Parish Registers, 1655-1915

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Thomas Devaney

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NameThos Devanny Baptism Age0 Event TypeBaptism Birth Date1845 Baptism Date Dec 1845 Baptism Place Balla, Mayo, Ireland Parish Variants Balla and Manulla, Balla, Drum, Roslea and Minolla, Drum, Manulla, Minolla, Roslea DioceseTuam Father Owen Devanny Mother Catherine McGuire