I've managed to find SOME background on Vernon Blyth Castle:
William Blyth (Vernon’s paternal grandfather), born in Norwich, in 1833 or ’34. In 1901 he was the pubkeeper at the Great Eastern Hotel in Norwich. His wife (Vernon’s paternal grandmother) was Catherine (born in Grenford, Middlesex, in 1837 or ’38. Vernon’s father was William Thomas Blyth. His wife (Vernon’s mother) Jane was 19 in 1881.
Vernon William Blyth (later Castle) was born May 2, 1887, in Norwich, England.Vernon’s father William Thomas Blyth was born in London, Middlesex, in 1858 or ’59 . His wife (Vernon’s mother) Jane Finley, born in Nottinghamshire in 1861, daughter of William Finley, a stonecarver. William and Jane Blyth married in 1879 in London’s Islington district.
Any further-back (or current-day!) information would be hugely appreciated! Thanks.