Your reply made re-examine everything I supplied. Backaderry is in the civil parish of Drumgooland, it lies on the northern part of the most easterly regions The civil parish of Drumgooland lies NE of Clonduff civil parish. Both parishes contain Leitrim townlands
So looking for entries for Drumgooland civilparish in
http://www.irishgenealogyhub.com/down/tithe-applotment-books/drumgooland-parish.php#.VQ6Cr0t5kYU, the results are
Keenan, Arthur Townland: Magheramayo Year: 1829
Keenan, Daniel Townland: Ballymagenahy Year: 1829
Keenan, Francis Townland: Ballymagenahy Year: 1829
Keenan, Francis Townland: Magheramayo Year: 1829
Keenan, James Townland: Ballymagreehan Year: 1829
Keenan, Wm. Townland: Magheramayo Year: 1829
O'Hare, Arthur Townland: Ballymagreehan Year: 1829
O'Hare, Felix Townland: Magheramayo Year: 1829
O'Hare, Henry Townland: Magheramayo Year: 1829
O'Hare, Hu. Townland: Magheramayo Year: 1829
O'Hare, James Townland: Magheramayo Year: 1829
O'Hare, John Townland: Ballymagreehan Year: 1829
O'Hare, Margaret Townland: Ballymagenahy Year: 1829
O'Hare, Pat. Townland: Gargory Year: 1829
O'Hare, Patrick Townland: Ballymagreehan Year: 1829
O'Hare, Rose Townland: Ballymagenahy Year: 1829
O'Hare, Thos. Townland: Magheramayo Year: 1829
If you study the whole list for the parish it doesn’t include anything for Backaderry/ Bakeaderry/etc or indeed several other townlands, this might be because the record like Griffiths doesn’t include the poorest or the enumerator didn’t know all the townlands and just recorded his best effort at the place name area, or .... To be listed at all, one would expect the person/tenant/head of household/etc to be adult in the meaning of the law of the times.
The chapels include the Catholic Church of Immaculate Conception-Upper Drumgooland
in Leitrim townland on the road between Castlewellan and Dromore in the civil parish of
The graveyard has mainly 20th century graves.
PRONI & NLI have baptisms, marriages & burials 1832-1880;UHF has baptisms 1827 -1900 & marriages 1827 -1900; LDS Film # 0926082 has baptisms 26 May 1827- 28 Dec 1800, marriages 9 Aug 1827- 28 Dec 1880, burials 6 May 1828- 2 Nov 1880 These surviving church records may be all you will ever find in earlier records.
PRONI Public Record Office for Northern Ireland see
http://www.proni.gov.ukNLI= National Library of Ireland see
http://www.nli.ieUHF= Ulster Historical Foundation see
http://www.ancestryireland.com LDS = Latterday saints see
https://familysearch.orgThe chapel has a photo and a detailed history in
http://www.lisburn.com/books/dromore-diocese/parish-drumgooland.htmlSo sorry for confusions in locations, as you can guess I need to use google maps more often where you can find street level photos of the chapel etc
Have run out of time keep going jimG