iun case this helps, its in two parts
part 1
some records were registered or kept in district offices.as you have discovered
the civil parish of Clonduff lies to the west ans south west of Drumgath civil parish
Hilltown is a small village within the townland of Carcullion in County Down, Northern Ireland. Hilltown is the main village of the parish of Clonduff
I sense this person has to be relative a brother uncle or older
Thomas MONAGHAN . Drumgath married Mary Lindon 27 Jun 1848 in Drumgath Catholic Church PR CR from
http://freepages.genealogy.rootsweb.ancestry.com/~rosdavies/SURNAMES/M/MoaMon.htmchildren?
notes St. Patrick's Catholic Church in Drumgath Townlan
It was built in 1833 by Rev. Arthur Polin. In 1836 it was described as capable of holding 300 people. A nave was added in 1865 and the building completely restored in 2000.
For a list of parish priests see under St. Colman's Barnmeen Graveyard attached
PRONI Belfast church records gives R.C. Drumgath (Dromore diocese)
microfilmed records Baptisms, 1829-81; marriages and burials, 1837-80. MIC1D/24
Did you examine these at PRONI?
Joseph MONAGHAN . Clonduff & Drumgath married Susan Trevors 8 Dec 1865 at a Clonduff Catholic Church; father of Joseph b. 1 Jul 1873 (regd. Rathfriland) PR;CR from
http://freepages.genealogy.rootsweb.ancestry.com/~rosdavies/SURNAMES/M/MoaMon.htmnotes The newer Catholic Church built 1850; St. John the Evangelist- near Hilltown on the Kilcoo/Castlewellan Road in Ballymaghery townlandGraveyard attached; graves from 1844;
http://registers.nli.ie/ has registers to view 1850-1882 UHF has baptisms & marriages 1850-1900 PRONI not checked UHF is ancestryireland
Is this the family
1901 Census in Loughans (Hill Street) (file 4) (Tullyish, Down)
Monaghan Joseph [b~1841] 60 Male Head of Family Roman Catholic Co Down General Labourer Read and write - Married -
Monaghan Susan [b~1844] 57 Female Wife Roman Catholic Co Down House Keeper Read and write - Married -
children
Monaghan Maria [b~1869] 32 Female Daughter Roman Catholic Co Down Flax Spinner in Thread Factory Read and write Not Married
Monaghan Maggie [b~1872] 29 Female Daughter Roman Catholic Co Down Flax Spinner in Thread Factory Read and write - Not Married -
Monaghan Joseph [b1873] 26 Male Son Roman Catholic Co Down Worker in Thread Factory Read and write - Not Married -
Monaghan Agnes [b1875] 24 Female Daughter Roman Catholic Co Down Flax Spinner in Thread Factory Read and write - Not Married -
Monaghan Samuel [b1877] 22 Male Son Roman Catholic Co Down Flax Sorter in Thread Factory Read and write - Not Married -
notes b or registered Hilltown Clonduff
Monaghan James [b~1881] 20 Male Son Roman Catholic Co Down Flax Sorter in Thread Factory Read and write - Not Married -
notes b James James Aloysius Monaghan 1879 or James Lewis Monaghan 1879 see below Birthplace Ballymaghery, Down, Ireland [Clonduff] next eastern townlsnd to Hilltown in Carcullian townland
from
http://freepages.genealogy.rootsweb.ancestry.com/~rosdavies/SURNAMES/M/MoaMon.htmJames C. MONAGHAN . Drumgath b.c. 1890; a shoe maker of Rathfriland MOF p11
Joseph MONAGHAN . Clonduff & Drumgath married Susan Trevors 8 Dec 1865 at a Clonduff Catholic Church; father of Joseph b. 1 Jul 1873 (regd. Rathfriland) PR;CR
Thomas MONAGHAN . Drumgath married Mary Lindon 27 Jun 1848 in Drumgath Catholic Church PR
from Raynonds Co Down on
http://countydown.x10.mx/html/index2.htm Monahan, James Louis Birth
Birth Date: 13 Sep 1868
Father: Joseph Monahan
Mother: Susan Travers
Monaghan, Joseph Birth
Birth Date: 1 Jul 1873 .
Father: Joseph Monaghan
Mother: Susan Trevors
Joseph Monaghan
Christening Place RATHFRILAND, DOWN, IRE.
Birth Date 01 Jul 1873
Birthplace Rathfriland, Down, Ire.
Father's Name Joseph Monaghan
Mother's Name Susan Trevors
Monahan, Margaret Birth
Birth Date: 25 Aug 1870
Father: Joseph Monahan
Mother: Susan Travers
Monahan, Margaret Birth
Birth Date: 25 Aug 1870
Father: Joseph Monahan
Mother: Susan Travers