Hi Tammiegirl,
Churches in Ahoghill are:
First Ahoghill Pb on Straid Road
Brookside Pb on Brook Street
Trinity Pb on Church Street
St Colmanell's Church of Ireland on Church Street
Gospel Hall on Glenhugh Road
https://en.wikipedia.org/wiki/Ahoghill---
The "1st" designation usually means that it was the earliest congregation in the locality.
In fact "1st Ahoghill" is one of the earliest Pb congregations in Ireland, dating from 1654.
They just built themselves a new church building.
No hint on their website of an associated graveyard.
http://www.firstahoghill.co.uk/http://brooksidepc.org/content/brookside-history[Dating back to 1770, a spin out from Randalstown.
From the photos, it seems to have an adjacent graveyard.]
http://www.trinityahoghill.co.uk/history-congregation/[Its congregation dates back to a split in 1806.
Its associated graveyard dates from 1829, due to the parish burying ground becoming full.]
Generally, the traditional resting place of families was in the CoI "Parish" burial ground.
[Usually, in most places, denominational burial grounds did not appear till the late 19thC.
Though Jews and Quakers were granted special separate arrangements much earlier.]
The Ulster Historical Foundation's graveyard inscription database lists 2 HOGG entries for Drummaul ...
[Drummaul was an adjacent parish to Ahoghill, in which Randalstown was situated.
It was common for folks to be buried "back home" with their ancestral families.]
http://www.ancestryireland.com/family-records/gravestone-inscriptions/Expect that further help from local-knowlegable folks will follow.
The ideal would be a report of a burial notice from a local newspaper.
Hope that this has helped to orient you.
All the best for your visit/endeavours!
Capt. Jock
P.S. There is no entry for HOGG in Robert BELL's "Ulster Surnames".
[It only lists the 500 commonest surnames.]
Much of the migration to the area around Ballymena was from the NE of Scotland.
A James HOGG was the famous "Ettrick Shepherd" poet, supported by Walter SCOTT, from near Selkirk, about 40 miles due South of Edinburgh.
https://en.wikipedia.org/wiki/James_Hogghttps://en.wikipedia.org/wiki/Ettrick,_Scotlandhttps://en.wikipedia.org/wiki/The_Private_Memoirs_and_Confessions_of_a_Justified_Sinner[..."seen as a study of religious fanaticism through its deeply critical portrait of the Calvinist concept of predestination".]