Photograph of Colonel Ponsonby, Captain Pearson and Captain Markham, all staff of Sir George Brown. Colonel Ponsonby stands to the left with his hands in his pockets, wearing a bicorn hat. Captain Pearson stands in the doorway of a hut and Captain Markham sits on a chair to the right. All are wearing military uniform. Sir George Brown commanded the Light Division during the Crimean War and later became the Commander-in-Chief of the British forces in Ireland.