The townland of Rathdrumgran is in the parish of Kildarton in Armagh County. It is labelled number 18 on the map.
Paterson (Armachiana, Vol. 16) notes:
Rathdrumgran. The fort of the bushy ridge. Rath, lis, etc. denote ringed enclosures and in their various forms are common throughout the county...Gran seems to be a corruption of 'greannach' meaning bushy...Altogether there are about 48 townlands named Rath and over 700 where Rath is the initial syllable of the name. (p.25)
Drum (Druim) [meaning 'ridge'] is one of the most common names and figures as a prefix to about 2,400 places besides an equal number in which it is combined. (p.21)
The Environment and Heritage Service Sites and Monuments Record (2002) notes the following in this townland:
Platform rath of the Early Christian Period
SMR NO: ARM 012:040
CONDITION: SUBSTANTIAL REMAINS
"On the summit of a prominent drumlin, the monument is a well preserved circular enclosure, 42.5m diam. The interior is level, but has been raised up to 1.2m above the surrounding ground. A substantial bank, measuring c.5m wide & up to 1.2m high encloses the site. There is a break in the bank on the E which probably marks the original entrance. The W half of the site is surrounded by a ditch c.5.5m wide, 2.5m below the interior & 0.6m below the outer ground level. A hedge boundary now surmounts the bank."
PRONI records: OS/6/2/12/1 (Surveyed 1835. Engraved 1835.); OS/6/2/12/2 (Surveyed 1835. Revised 1860. Engraved 1860 (Stat file copy).); OS/6/2/12/3 (Not Received.); OS/6/2/12/4 (Surveyed 1835. Revised 1905-06. Reprinted 1931-1947. Published 1931 with mss markings in red and stamped references 2566, 2567, 2573.); OS/6/2/12/5 (Surveyed 1906. Revised 1948. Levelled 1888 and 1906. Levels revised 1949. Published 1953. (2 copies) - 1 being reprint 1953, 56, 61).); OS/6/2/13/1 (Surveyed 1834-35. Engraved 1835.); OS/6/2/13/2 (Surveyed 1834-35. Revised 1860. Engraved 1863 (Stat file copy).); OS/6/2/13/3 (Surveyed 1834-35. Revised 1905-06. Published 1930.); OS/6/2/13/4 (Surveyed 1905-06. Revised 1954-55. Levelled 1888 and 1892 and 1902, 1905-1906. Levels part revised 1948. Published 1958. (2 copies).); D.1524 (Mortgage.); D.1644 (Expired leases of earl of Charlemont's estate.); D.2394/1/3 (Lease.2 Jan. 1804); T.387 (Rent roll re Earl of Charlemont estate.); VAL/1B/225B (1st valuation records.); VAL/12B/10/25A, VAL/12B/10/25B, VAL/12B/10/25C, VAL/12B/10/25D, VAL/12B/10/25E (Valuation annual revision list.); VAL/2B/2/28C (Griffith valuation list.).
Railway at Rathdrumgran.