The second thing that has been published is from Ireland. The Provincial Record Office of Northern Ireland (PRONI) is moving to a new site next year and is having to close for nine months to do so. They are therefore putting on line some extra searchable things including a number of Directories for Belfast and Ulster generally. These include a few useful references, as follows:
1884 p225: Gresham St, 22: McIlhagga & Co. Mill and Railway furnishers, dry salters and commission agent.
1890 p93: Belfast Homing Pigeon Society: Committee includes J.McIlhagga;
p255: McIlhagga, James, flaxdresser, 36 Disraeli St
McIlhagga, N.O. (of McIlhagga & Co., Great Patrick St)
Lough View Cottage, Cavehill Rd
McIlhagga & Co., Millfurnishers, 84-88 Great Patrick St.
p360: Berlin St, 53: McIlhagga, Eliza
p485: Island St, 92: McIlhagga, John, Labourer.
1892 p159: Cavehill Rd. (Old) Loughview Cottage, McIlhagga N.O., Millfurnisher
p347: Patrick St, Great: 84-88: McIlhagga & Co. Millfurnishers
p408: ? Rd. 102: McIlhaggan, Mrs.
1895 p25: Aughrim St., 5: McIlhagger, G, pensioner.