A few points that may add to your knowledge; Firstly, Emily Wray, who was the sister of Charles and John Wray (both killed in WW1) became Mrs Emily Beattie and lived at Nixon's Corner, Ballougry, which is a few miles from Londonderry. Secondly, a memorial hall was erected in Carrigans, County Donegal, in remembrance of the men from the Carrigans district who died in WW1. The names of John and Charles Wray and 29 other names were read out at the hall dedication ceremony in 1920. Sadly the memorial hall was maliciously destroyed by fire in 1971. Finally, Charles and John are commemorated on the rolls of honours of both Newtoncunningham and Taughboyne Parish churches.