No need to apologise, Kingskerswell, the problem seems to be that there's too much posted that doesn't quite add up here.
Have spent quite a while going back to the start of the thread checking details. Here's a basic family tree according to what Cbrad has posted-
John ADAIR born 1863/c1869 Co.Londonderry married c1881 Strabane/Omagh district to Matilda (possibly Jenkins?) who was born 1858/c1855 Co.Tyrone. 1911 - 47 Chapel Rd, 1912 (Matilda) 4 Clifton St., Waterside; moved to England. The family were Presbyterian. Children (not in order)-
1. Annie born 25 May 1885 Co. Tyrone [m.1912 William John Myers]
2. Jenny/Jeanne born 1881-1888
3. Tilly/Matilda b.1895 Co.Tyrone
4. Eleanor/Nell born 1892 Co.Tyrone
5. John killed WWI Royal Inniskilling Fusiliers, born Omagh
6. William/Billy moved to US then to England, from Donedheady nr. Strabane
It all sounds logical and there certainly are ways to verify at least some of the information.
1) birth certificates for any of the children will list not only exact date and place of birth but also mother's maiden name which should then enable the correct marriage certificate to be found
2) church records would hopefully lists baptisms of these children (and possibly others who didn't survive/are as yet unknown)- may also give mother's maiden name and residence at the time
WWI soldiers who died are usually much easier to trace than those that survived. So, concentrating on John Adair-
1) most likely soldier found so far is John Adair #14849 died 1 July 1916 Ypres
2) does not seem to be listed on Londonderry War Memorial (not uncommon for this to happen) but is not listed on any
Presbyterian Roll of Honour for any churches in Omagh or Strabane Presbyteries. You can check further but I stopped at those 2 Presbyteries.
Added- only Adair mention found was Urney & Sion (Strabane Presbytery) for 3 Adairs from Church Square3) it's possible that John's dead would be listed in local newspaper but as there were so many killed 1st July the paper might have just printed lists of names from those killed or missing without family details.
The
1911 census entry for the family is very interesting. John is listed as having 8 children (6 living) while Matilda says 6/6- perhaps just a mistake but keep in mind John might have been married previously (John and Matilda's marriage certificate should say wether he was widowed or single). Ellen is listed as Ellen J. and sister is Tillie. The census also confirms that the family were Presbyterian.
More to follow...