Hi HannahB92, I hope you got sufficient for a Chrismas present for your Colgan friend. I wasn’t able to load
https://myoldohiohome.com/cleveland/srn/4/d/0b882ebb8d057b7e8711439c597087d4.htmland as Aghadowey had done wills I didn’t pursue PRONI further except for TABs below. I wondered if you had seen the
1796 THE FLAX GROWERS OF IRELAND in Co Down -https://www.failteromhat.com/flax/down.php
which has
Colgan Edward Kilkeel
Colgan Francis Kilkeel
Colgan John Kilkeel
Colgan Loughlin Kilkeel
Colgan Nicholas Kilkeel
probably all of full age and so born before 1780, anyone of these could be a further back generation, all could be related
with two more on the northern side of the Mourne mountains
Colgan Nicholas Clonduff
Colgan Patrick Clonduff
1823-1837 THE TITHES APPLOTMENT BOOKS for Kilkeel see
http://www.irishgenealogyhub.com/down/tithe-applotment-books/kilkeel-parish.phpName Townland year
Colgan, John Aughiochal 1830 I think Aghyoghill map ref 1
Colgan, Michael Aughiochal 1830
Colgan, Widow Margt. Aughiochal 1830
Colgan, Widow Cathn. Aughrim 1830 map ref 22the most easterly
Colgan, Widow Mary Ballygowan 1830 map ref 7
Colgan, Francis Ballymaderphy 1830 map ref 3
Colgan, Henry Corcreighan map ref 9 and Drummonlane 1830 map ref6
Colgan, John, Jr. Glenloughan 1830 5b the northern half. 5a the southern half
Colgan, John, Sr. Glenloughan 1830 5b the northern half. 5a the southern half
Colgan, Neil Glenloughan 1830 5b the northern half. 5a the southern half
Colgan, Nicholas Glenloughan 1830 5b the northern half. 5a the southern half
Colgan, Widow Judith Glenloughan 1830 5b the northern half. 5a the southern half
Colgan, Widow Mary Glenloughan 1830 5b the northern half. 5a the southern half
Colgan, William Glenloughan 1830 5b the northern half. 5a the southern half
Colgan, Laughlin Grange 1830 map ref 13
Colgan, Patrick Greencastle 1830 map ref 11
Colgan, James Lisnacree 1830 map ref 2a &2 b
Colgan, Patk., Jr. Lisnacree 1830
Colgan, Patk., Sr. Lisnacree 1830
Colgan, John Tullyframe 1830 map ref 19
all these homesteads form a clump within the south west border of the parish bordering
KIlbroney to the east and and Carlingford Lough and the Irish Sea to the south.
One might conclude all 7 might be close relatives to James Colgan, indeed speculating if James Colgan was born before say 1828, then his father could be one of five men listed. comparing the above to that that to ~32 years later
1863 Griffiths Valuation with Map References within each townland see
http://www.askaboutireland.ie/griffith-valuation/NAME Townland
Colgan, Mary Aghyoghill map ref 7
Colgan, Thomas Aughrim map ref 55
Colgan, Francis Ballymadeerfy map ref 17
Colgan, James Glenloughan map ref 39 7 acres, ho £1.5shillingspa
Colgan, John (Owen) Glenloughan map ref 22 6 acres Ho 10 shillingspa
Colgan, John Glenloughan map ref 14 3 acres ho £1.5shillingspa
Colgan, Mary Glenloughan map ref 26a11 acres , Ho 5shillingspa
Colgan, Peter Glenloughan map ref 26b Ho10 sh pa ;map 27 6 acres
Colgan, Sarah Greencastle map ref 2:3
Colgan, James Lisnacree etc etc
Colgan, Peter Lisnacree etc etc
Colgan, Thomas Lisnacree etc etc
Colgan, Francis Tullyframe etc etc
Colgan, John Tullyframe etc etc
Colgan, Patrick Tullyframe etc etc
So its possible to go further on each of the Colgans living in Glenloughan by next looking up
https://www.nidirect.gov.uk/information-and-services/search-archives-online/valuation-revision-books this opens for Glenloughan with 6 period entries for Glenloughan and 6 entries for Glenloughan Upper[I think this is b in TABs its sparse on the slopes of the mountains
end of part 1