Tradition was to marry in the bride’s church, so the 1850 marriage which took place in Drumcree Church of Ireland tells you that was probably the McMurray family church. They lived in Drumallis at that date.
John Hazelton lived in Bovean in Co Tyrone.
The Valuation Revision records (on the PRONI site) show John Hazelton senior on plot 8 in Bovean (a 41 acre farm,). His name remains as owner till 1865. On plot 9 there’s William Hazelton who was replaced by Edward in 1865 and on plot 10 (a 12 acre farm) was John junior who had gone by 1876. Those farms today are down a dead end lane off Bovean Way BT71, near Moy Kitchens. A few miles east of Dungannon.
This family still there in 1901:
Letters of Administration of the personal estate of John Hazelton late of Bovain County Tyrone Farmer a Bachelor deceased who died 12 August 1873 at same place were granted at Armagh to Eleanor Graham (Wife of George Graham of Annaghbeg (Killyman Moy) in said County Farmer) the Niece of said deceased.
Probate of the Will of Mary Jane Hazelton late of Bovain County Tyrone Married Woman who died 27 June 1914 granted at Armagh to Barry Megloughlin Solicitor
The first probate file was lost in the 1922 fire in Dublin. The second still exists and is on the PRONI wills site.
Looking at the GRONI website, I see the following children to John & Francis, both born at Bovean:
Unknown male 28.8.1870
No Hazeltons listed at Bovean Way in the current phone book but many people aren’t listed nowadays and also many don’t use landlines anymore so that’s not conclusive. You could write to the local Church of Ireland Rector to see if there are any Hazeltons in his congregation interested in making contact.
Rev Mark Lennox
85 Dungorman Road