Captain Leslie Maurice Cockerell OBE (1873?–1943) Mining engineer
“man about town”

Leslie was the youngest of the boys, only 4 years old when his father Sydney John died. He was educated at St. Paul's (with his brother Sydney Carlyle) and Cambridge.

In 1889, suffering from consumption he went to the United States to recover as Theo had done, first staying with Douglas in Canada, then after returning to England for 6 months joined Theo in Colorado to fully gain strength ….

He was said to be very different to his three studious and quite serious, thoughtful brothers - “a man about town, dressed smartly, enjoyed sport …”

He had a successful and varied career moving on from Colorado to Mexico;
Wilfred Blunt wrote of Leslie:
Leslie had been a highly prosperous mining engineer, but he had a speculative turn and never managed to keep more of his money than his devoted wife insisted on investing.

In 1899 he became general manager of the United Mexican Mines Association. He worked as a reporter in Mexico, South and Central America and in the USA; He worked for the British military intelligence Corps, retiring in 1917 with the rank of Captain (later receiving an OBE for his war services); Appointed as secretary to the controller of the Department of the Mineral Resources of the Ministry of Munitions, he later took charge of the dept until it was closed…Set up a consulting practice in the City (for Mining?) and continued reporting work in various parts of the world.

(TBC)