The townland of Glasdrumman is in the parish of Creggan in Armagh County. It is labelled number 30 on the map.
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"Glassdrumman church, situated in the townland of Glassdrumman on the road between Markethill and Keady at a distance of 1 and a quarter miles from the former, is a plain rectangular building, slated and in good order, without a tower. It was built in the year 1788 and repaired last in 1836, a new roof and gable having been then added. It is 50 feet long and 25 feet broad. Rector the Reverend Doctor Blacker, curate the Reverend L.H. Robinson at Kilclooney Glebe. " (Ordnance Survey Memoirs 1835-38)
PRONI records: VAL/1B/214 (1st Valuation Records); D.1638/3/20 (Bundle of leases and renewal leases.); D.3012 (Rentals and sale particulars.); OS/6/2/31/1 (Surveyed 1835. Engraved 1835.); OS/6/2/31/2 (Surveyed 1835. Engraved 1835. Revised 1862. Engraved 1863.); OS/6/2/31/3 (Surveyed 1835. Revised 1907. Published 1909. Reprinted 1930.); OS/6/2/31/4 (Surveyed 1907. Revised 1956-7. Levelled 1903-4 and 1906. Published 1961 (2 copies).); OS/6/2/18/1 (Surveyed 1835. Engraved 1835.); OS/6/2/18/2 (Surveyed 1835. Engraved 1835. Revised 1860. Engraved 1863.); OS/6/2/18/3 (Surveyed 1835. Revised 1906. Published 1908.); OS/6/2/18/4 (Surveyed 1835. Revised 1906. Published 1908. (2 copies - 1st a reprint 1930, 1933 and 2nd reprint 1933, 1939, 1942, 1946, 1955.); OS/6/2/18/5 (Surveyed 1906. Revised 1954-5. Levelled 1892, 1901-2, 1904 and 1906. Published 1958 (2 copies).); VAL/12B/13/1A, VAL/12B/13/1B, VAL/12B/13/1C, VAL/12B/13/1D, VAL/12B/13/1E, VAL/12B/3/1F, VAL/12B/15/14A, VAL/12B/15/23A, VAL/12B/15/23B, VAL/12B/15/23C, VAL/12B/15/23D, VAL/12B/15/23E (Valuation annual revision list.); VAL/2B/2/14A, VAL/2B/2/32C (Griffith valuation list.).