This church is located on Phibsborough Road so I am not sure why it is described as being in Grangegorman.
All Saints Church, Grangegorman is a Church of Ireland church located in Dublin.
It was built in 1828, to designs by John Semple, and formed as a parish in 1829 from the areas of St. Michan's and St. Paul's. It is a constituent member of the Christ Church Cathedral, Dublin Parish Group alongside St. Michan's Church, Dublin and St. Werburgh's Church, Dublin. This church in noteworthy on the basis that it is numbered among the first in Ireland to worship according to Tractarian Principles, and was the subject of protest and sanction by the Protestant community in Ireland in the 19th century.