Charles attended school at Compton Place Road New College in Eastbourne, Sussex and when his studies were completed, went to work for his father in Headless Cross as a needle manufacturer assistant.
How they met is unknown, however, his parents were active members of the Wesleyan church and his mother had visited West Looe in Cornwall in 1891.
Charles and Benjamin where listed as gentlemen in the sale documents when the property was sold to another needle manufacturer J. English & Son in September 1900.
By 1901 the couple had moved to or was visiting South Hammersmith in London where they were boarders in a house they shared with his brother Benjamin.
His death certificate indicates he was a retired bank manager who resided at Windycliffe, 6 Spring Hill Road in the town of Totnes, Devon.
His biography (1951, Introduction to No Surrender!, Thomas Nelson and Sons) states that in 1879, Avery's family left England for Australia.
In 1882 he was rescued by a Dutch naval ship and reunited with his paternal aunt, Hanna Avery, his only living relative.
These books were popular among boys and girls in the later half of the 19th and earlier part of the 20th centuries and described life in public and private schools in England.
Avery also wrote several adventure books and stories, often featuring pirates and again drawing on his childhood experiences in Malaysia.
In early 1941, in the midst of WWII, Avery retired and finally left Europe, supposedly to travel round the world.
In 1951, after his death, Avery's publisher (Thomas Nelson and Sons Ltd.) released a special re-issue of No Surrender!
1) Correspondence dated 15 December 1922 from Harold Avery which mentions his book "The Prefects Patrol" and lists Wyndcliffe, Hornyold Road, Malvern as the return address.