Hi again,I just found this, a gravestone at Moneydig Presbytarian Church Graveyard in Londonberry.
It syas in memory of Alexander McFetridge, late of New Zealand, died 7 September 1926 aged 86. Also lists his siblings as:
Hugh, died 29 Sept. 1930, aged 83
Thomas, died 9 Feb. 1937, aged 86
and their sister
Ann Jane Warwick, died 29 Aug. 1939, aged 85.
Hope this helps. At least it is another point of research.....