Sue - Just obtained a copy of his will. He died on 30 October 1887. He left the bulk of his estate to son Edward and a small amount of money of William Henry (my grandfather) and Thomas (who went to USA not Canada as I thought) and to his three daughters. Ellinor wife of Sinogles (name is familiar?), Ann wife of Alfred White and Christian.
No mention of his wife and I haven't been able to find any reference to her death. I think there was another son George (29/5/59-6/4/79); John (1846 - ?); Catherine (1839-1851) and Agnes (1847- ?). Perhaps all of these pre-deceased John. I can't find any reference on the IOMFHS site.
Ellinor is believed to have married Mark ? who was drowned in a Laxey Mine accident. Was it Sinogles? I've found details of those that died in the major accident at that mine but no reference to a Mark.