I have Mary and Williams marriage cert dated Aug 5th 1875, parish of St George, Dublin. William was a servant and lived at 3 Mountjoy Square. Williams father was a butler. Mary's father John, a Dairyman. I also have a birth records for Anna Mercer, 5 Oct 1876. Agnes Esther Mercer,4th April 1887, 16 Lower Drumcondra rd, Mary Theresa Mercer. 13th Oct 1878, and Margarita Mercer 15th Jan 1892, 71 Mespil Rd,