Gerald,
Sorry my mistake. It is Cheryl who contacted me. Mixed some names up. I have been looking at some records in PRONI for her. I am going to go and look for graves tomorrow in Killyleagh, Annahilt and Hillsborough. I’ll also take a few photos, to give you both a flavour of what the areas are like.
I have found a William Magill in Hillsborough (wife Jane Maginiss) who married there in 1807 but I am not sure it’s your family. The problem is that William & Jane Magill are pretty common names. I suspect there’s more than one family here. I have also found a James Magill of Loughagery who was a brewer. He died in 1846. Not sure where he fits in.
But I’ll let you know how I get on shortly.
Elwyn