RootsChat.Com

Thanks Hallmark,
I think the Thomas Johnston of Glennan I am looking for was church of Ireland . The Harpurs were from Gorestown which I think is co Tyrone.
I have lots of photo's of graves in Moy and Killyman and I think possibly Galbraith and Thomas Johnstons parents may have been from Derrygally.
I will take another look at the graves in Monaghan and see if I can find a C of I graveyard

I can't understand why john would be abbreviated to jno?? If I scanned this bit in the will is there anyway I could upload it for someone else to have a look at it.??
 I think Thomas Henry Harpur was my Gx2 grandmothers nephew ie Maria's cousin I will look it up on my tree. It would be great if I could find a street directory or something for that time but I think the census records would have been destroyed.
There was a James and a Thomas Johnston in Knappa and a daughter who married a Galbraith from Omagh !! but I can't fit people into dates that match.
Your help has been great. I feel I have made progress already. 

Thank you Annie, I didn't expect such a prompt reply so I didn't put a lot of detail in my post.
I have a photocopy of Galbraith (sen) will which I got at PRONI.
I have been to Moy several times and photographed his tombstone in the church of Ireland graveyard. Unfortunately the church records were dumped by a cleaner so I was not able to find out if this is where he was baptised or married.
I read his will about 2 years ago and thought I had found a lead when he put his two executors as " my brother in law  David Richardson Goodlatte of Salem Lodge " it looked more like "Goodlast" but I have researched his family thinking he must have been my Gx2 Grandmothers brother. About a month ago I got information through another family tree that actually David Richardson Goodlatte's wife Amelia Harpur and Margaret were sisters , which technically makes DR Goodlatte my Gx2 Grandmothers brother in law.
I thought I would have more trouble tracing her than Galbraith.
The second exec. was "my brother Thos. of Glenn?an. I had difficulty making this out as it looked like Tho with the end of the o going up into a little s and then a . There was a gap after Glenn and then two letters which looked like an
What I know about Galbraith is he married Margaret Harpur about 1824 (another family tree)
Of his six children Galbraith (jun) moved to Knockbreda in Belfast married Isabella Dickson and had about six children , one was my grandfather Thomas.
William was unmarried and died 26/12/1904 in Omagh lunatic asylum where he spent the last 27 years of his life.He was buried with his parents.
Edward was a minister. He was unmarried . He performed is sister Margaret's wedding in Hoath church in co Dublin. In 1900 his address was The Vicarage, Westgate, Co Durham
He died in Bangor co Down in 1919 and is buried with his parents
Maria married William Forest Mclinton in St.Peters in Dublin. She died in Bangor co Down in1919(according to another family tree)  and is buried with her husband and a son aged 18 in a grave beside her parents.
Elizabeth also married in Dublin.
Galbraith died in 1851 at the age of about 58. The name on his tombstone is Lieutenant Galbraith Johnston. Margaret died in Lucan (Dublin).
There are some articles in The Armagh guardian about Galbraith one states he was re-elected as Chairman of the town commission in 1845.
I hope I have included all relevant info I have a lot more. I think Galbraith's mothers maiden name might have been Galbraith and his father could have been William, Edward, Thomas, or less likely James ,Alexander, Samuel.
I would be very grateful for any advice .