Just sort of looking around your question from
http://griffiths.askaboutireland.ie/gv4/gv_family_search_form.php the date is about 1860, plus or minus 5 years
Dallas George Carrowreagh Antrim Drumtullagh, Grange Of
Dallas James Ballylummin Antrim Ahoghill
Dallas James Craigywarren Antrim Kirkinriola
Dallas James Drumfane Antrim Kirkinriola
Dallas James Lismorrity Antrim Drumtullagh, Grange Of
Dallas John Ahoghill, Village Of Antrim Ahoghill
Dallas John Ballylough Beg Antrim Billy
Dallas John Novally Antrim Ramoan
Dallas Mary Sea View Place Antrim Ballywillin
Dallas Mary Sea View Place Antrim Ballywillin
Dallas Robert Mazes Antrim Drumtullagh, Grange Of
Dallas Robert Mazes Antrim Drumtullagh, Grange Of
Dallas Stephen Craigywarren Antrim Kirkinriola
Dallas Thomas Carneatly Antrim Ramoan
Dallas William Bellee Antrim Kirkinriola
other Dallas are living at
Londonderry Bovevagh
Londonderry Dungiven
Queen's Lea
Tyrone Artrea
Galway Ballindoon
Galway Omey
tenants might have included
Kane John Carneatly Antrim Ramoan
Lafferty Anne Lismorrity Antrim Drumtullagh, Grange Of
Mcconaghy Andrew Novally Antrim Ramoan
Mcgonigle William Mazes Antrim Drumtullagh, Grange Of
Mckeown Martin Ballylough Beg Antrim Billy
Redmond John Ballylough Beg Antrim Billy
Simpson Alexander Carneatly Antrim Ramoan
in 1911 census
www.census.nationalarchives.ie/search/results.jsp?surnamDallas Robert John Coolkenny Ramoan Antrim 11 M
Dallas John Cullybackey Town Galgorm Antrim 59 M
Dallas John Lambeg, North Derryaghy Antrim 24 M
out of the 12 households in 1911 in Ballylough Beg, there are two Jamisons!
He must have been an exceptional man.
Jim