Born on 20 April 1867 at Nenthead, Alston, Cumberland, Dalton spent his early life in the northwest of England before his family moved to Essex.
He became an insurance clerk in London, living in Loughton where he owned a cottage, and slept under canvas in the garden, but at the age of 36, he gave up this existence and went to live in a rough wooden shack, and in a cave (which he dubbed "The Cave Hotel") in Borrowdale, from where he offered camping and adventure holidays, as reported in the BBC's Countryfile programme broadcast on 20 September 2015.
Loughton Town Council resolved in 2021[1] to erect a blue plaque to him on the house he lived in the garden of, Walnut Cottage, Stony Path.
To this day, evidence of Dalton's existence can be seen in the upper chamber of the cave, where a carving on the caverns wall warns visitors "Don't Waste Worrds (sic), Jump to Conclusions".
This phrase held relevance to the argument as Millican often told his friend “Don’t waste words,” or “Don’t jump to conclusions.” An alternative lifestyler long before the term was created, Dalton was a vegetarian, pacifist and teetotaller – lived off his wits, surviving on a small income as a climbing guide.