Hi s58roads.
We have connected via ancestry recently so will just update this thread for the benefit of anyone else interested in this family in future.
Hugh Mcgrogan was born in or near Castledawson c1775 according to his militia record obtained from the National Archive at Kew. He served around 22 years in the Londonderry militia until discharge in April 1816, at some point he marries a Molly Davis and they have at least one child Margaret Mcgrogan (born c.1809) who marries Hugh Mcpeake ( born c.1808).
We know from poor law archives in Glasgow that Hugh and Maggie Mcpeake and their sons all move to Glasgow in or around 1848.
From there it gets speculative, there are 4 Hugh Mcpeakes in the 1831 census index at least one or possibly 2 of which could be ours as Hugh Mcpeakes father was also Hugh Mcpeake and married an Esther Mckerry, I note the Mckerry name doesnt seem to exist in any Co Derry records leaving the guess that she is from outwith the County or is mispelt/transcribed from Mckeffrey of which there are a few in and around the same areas in South East Derry.
Two of the Hughs are in Tamlaght O`crilly, one in Tyanee and one in Ballymacpeake, one in Oldtown which I think is near Bellaghy unless anyone with local knowledge can tell us different and the other is in Ballygruby townland which is East of Moneymore. Trying to locate RC parishes to check all of these Hughs might be difficult but realistically the only way we will know which one(s) ours for sure.
Tyanee seems initially most likely as it also contains an Esther Mcpeake and a Hugh Mcgragan (Mcgrogan).{ EDIT-this Hugh Mcgrogan does not exist in other Tamlaght O`Crilly 1831 database so not so sure}
Griffiths ( completed in 1858 for Derry I think) contains some interesting speculation again in that there is a James, John and Bernard Mcpeake on adjacent tenancies in Derrygarve townland, directly to their left in adjacent tenancies/plots are Davis brothers who seem to be major landowners in the area and directly to the Mcpeakes right over the river (Moyola?) in The Creagh are Mcgrogans again adjacent to the Mcpeakes tenancies. This seems too much of a coincidence as James, John and Bernard are repeated family names but again I can only speculate any relationship to the Hugh Mcpeakes who seem further out from the Castledawson area than this.
There is one James Mcgrogan in Castledawson in the 1831 census who we are speculating may be Hughs son, this is based on the fact there is a James Mcgrogan living next to our Mcpeake family in the 1851 Scotland Census in the Calton area of Glasgow, we haven`t unfortunatlely been able to locate a death cert for him yet to prove or disprove this but again too much coincidence methinks.
Gravestone websites have almost all Mcgrogan burials in Magherafelt parish and one mentioned 3 in Derrygarve itself but I have not "ordered" any of these to date.
Any pointers or ideas on our Mcpeakes and Mcgrogans ( or Davis` or Mckerry) based on the above info from anyone with local knowledge would be more than welcome.
EDIT, all Mcgrogans in the 1901 census for Co. Derry are in Castledawson, seems to be one family quite possibly related.