I wonder what became of Emma.
I'd found Emma and Nettie in the 1911 Census but Nettie (Sarah) obviously moved to Portstewart. I wonder if Emma went there too. Maybe Emma eventually married.William and John are also mysteries.
Haven't read through entire thread so apologies if this has already been posted but it sounds as though you don't have this -Craig Sarah Annette Brown of 6 Old Coach Road Portstewart county Londonderry spinster died 10 November 1949 at Bannview Hospital Coleraine county Londonderry Administration Londonderry 17 July [1956] to Emma Craig spinster. Effects £205 10s. 11d.
. Yesterday I noticed a recorded death for Emily Jane Craig on 10 April 1950 at Creevedonnell. It was reported by her nephew Andrew Craig from Ardnabrocky. Her age is 74yrs, however so this may not be the same person. If it is, then who is Andrew Craig