[1][2] Their mother, Ann Coward, is of Greek-Australian descent and they attended St George Greek Orthodox Church, Rose Bay.
[5] At the age of 14 Leon promoted good reading for children and asked a local book store if he could organise events on their premises.
[6][7] It was a presentation gift to the Australian War Memorial and won the 2010 Poetry Prize at the Inaugural Woollahra Library Word Festival.
His compositions have been positively received by Australian and international audiences, and regularly critiqued in the British Society for Eighteenth-Century Studies publication Criticks.
"[16] Coward frequently engages audiences' imaginations before performing, such as describing ballet sequences for '"Two Kings" suite and "Imaginary Pas De Deux".