[4] The organizing committee for the prestigious London International Congress of 1899 was headed by Sir George Newnes, with Trenchard occupying the role of treasurer.
[7][8] He represented Great Britain in a series of Anglo-American cable chess matches, held between 1896-1911, for the Newnes Trophy.
Trenchard took part in 1898, 1899, 1900, 1902 and 1903, scoring wins against JA Galbraith (1898) and Eugene Delmar (1902), while he shared a draw with David Graham Baird in 1899.
[9][10] At the 15th City of London Chess Club Championship, which spanned 1904 and 1905, he finished 3rd, behind PS Leonhardt and FE Hamond, but ahead of EG Sergeant.
[11] Trenchard, who managed a mineral water company in Vauxhall, was a prominent member of the National Liberal Club, where he died in 1934.