My great uncle was Arthur William HARRIS born 1877/1878 in Great Marlow. His birth was registered in the first quarter of 1878 and he was baptised in 24th April 1878.
The story, from the family, says that he had a row with his parents, walked out and was never seen again.
In 1901 he was living at home in Queen's Road, Marlow, and was a brewer's labourer.
In 1911 he in no longer at home but the census return states that all six children are still living.
I think I have eliminated all entries for Arthur Harris born around 1877/1878 in the 1921 census.
For years I have tried to find Arthur. If anyone can think of anything that I have missed please let me know. I keep returning to the mystery as it a constant niggling irritation in the back of my mind.