The following is an excerpt from a letter by family researcher Henry M. West Winter to Bermudian genealogist William Zuill dated March 23, 1936. The full text can be read at the profile of John Dunscombe (1777-1847). This section relates to John Josiah William:
"The third child of John Dunscomb was named John William Dunscombe, and he became eventually Collector of the Port of Quebec. He married Caroline Birch Durnford, the daughter of General Elias Walker Durnford, R.E. and Jane Sophia Mann. He died at Quebec, December 16, 1891, having had fourteen children, of which three only left issue, Florence married to Dewitt Page Ballard; Caroline Durnford, my grandmother, married to George Mosle, of Bremen, and John Arthur Seward Dunscombe, of Leadville, Colorado, all of them long since deceased."
John is buried in Mount Hermon Cemetery, Quebec, Canada, Lot 0-218 (Mackey, Frank. Down with slavery: the black fact in Montreal, 1760-1840; 2010; McGill - Queen's University Press.