The younger Charles learned to paint from his uncles, especially George Augustus Williams, whom he lived with in 1856 and 1857 at 32 Castelnau Villas in Barnes at a time when Leslie was already exhibiting works at the Royal Academy.
The lesser-known Charles Leslie was one of the first Victorian landscape artists to portray scenes of the Scottish and Welsh moorlands, and became one of the better-known painters of these themes.
His landscapes often feature stark mountains in the background towering over still waters with open skies above.
[3] He died of liver disease at the age of 46 on 9 September 1886 at Mitcham Road Tooting near Wandsworth, Surrey.
One of his landscapes is also on view at the Museum Geelvinck Hinlopen Huis[4] in Amsterdam in the Netherlands.