Lhizz,
I never saw your 2016 reply, so apologies for the delay in responding. The place that the Dawson family lived looks to be “Brook Hill” on the marriage certificate. It’s part of the townland of Ballyellough, near Magheragall, Co. Antrim so the property I mentioned in my reply of 24th Aug 2015 is the right family home.
The Crothers family lived in Ballymurphy. In Annahilt, Co Down Griffiths Valuation for 1863 lists James Crothers there on plot 14 which was a 25 acre farm. There were other Crothers living nearby who might be related. Plot 14 today is on the modern Ballynahinch Rd near the junction with Laurel Rd. There’s still a house there though whether it’s still a working farm is hard to tell from Google Earth.
You can see the 2 farms on the maps attached to Griffiths Valuation:
https://www.askaboutireland.ie/griffith-valuation/index.xml
Tradition was to marry in the bride’s church, which in this case was Loughagery Presbyterian. So that’s probably where Mary was baptised. If you want to find her baptism and that of any siblings etc, that church’s records start in 1801. There’s a copy in PRONI (the public record office) in Belfast.
No Dawsons in Ballyellough in the 1901 census but there were 3 Crothers househoilds in Ballymurphy:
http://www.census.nationalarchives.ie/pages/1901/Down/Annahilt/Ballymurphy/
The Valuation Revision records (on the PRONI website) show James Crothers on plot 14 being replaced by Hugh in 1875. Hugh is noted as “reps of” in 1885 indicating he had died. He was replaced by Sarah Ann Crothers in 1895, and this is her in the 1901 census.
http://www.census.nationalarchives.ie/pages/1901/Down/Annahilt/Ballymurphy/1237480/
Hugh had died in 1875 aged 35. His wife was Sarah Ann Carruthers (maiden name Carruthers). So that’s his widow in 1901. (Her age has not been transcribed accurately).
https://civilrecords.irishgenealogy.ie/churchrecords/images/deaths_returns/deaths_1875/020626/7236903.pdf
They married in 1865 (again at Loughagery Presbyterian church) and Hugh’s father was James. So Hugh was a brother to Mary Crothers who married Richard Dawson.
https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_re…
Daughter Sarah’s birth in 1872:
https://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1872/03227/2182970.pdf
Family in 1911:
http://www.census.nationalarchives.ie/pages/1911/Down/Annahilt/Ballymurphy/246740/
Sarah Crothers looks to have died on 12.5.1925 aged 80. The farm then passed to Hugh W Crothers.
Alegou has mentioned the Sarah Dawson marriage in 1874. Link here to the certificate. Her father was John Dawson of Ballymacward Upper, in Derriaghy parish. I don’t see an immediate connection with the other Dawson family.
https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1874/11242/8122601.pdf