The Keith Sydney Isles (1902-1977) memorial window is in St David’s Anglican Cathedral, Hobart. The window is made up of three lancet windows with a figure in each. The figure in the tall central window is a knight in late medieval armour and helmet holding a spear and shield. Above the knight is a ring-headed (Celtic) cross, a style common in Ireland, Scotland, the Isle of Man, Wales, and England from c. 750-1200. Below the each of the figures are two heraldic shields.
For the interior of the Cathedral see http://ausmed.arts.uwa.edu.au/items/show/1198