The Hon. Robert PALMER who was a grandson of Lord Salisbury. Palmer was a Captain in the 6th Battalion of the Royal Hampshire Regiment. He was wounded at Umm-El Hamal, Mesopotamia on 21st January 1916 and died in a Turkish prison camp.
Lt. F. J. PATMORE of Lymington, Hampshire. Patmore was a Captain in the Hampshire Regiment. He was taken prisoner after the fall of Kut. One of his poems can be found in the WW1 Anthology edited by Jacqueline Theodora Trotter "Valour and Vision" Poems of the War 1914 - 1918", published by Longmans, Green in 1920 and now available on Archive :
details about Lt. Patmore's capture can be found here: http://poolemuseumsociety.wordpress.com/2014/10/01/dorset-and-mesopotamia/
Was he I wonder the son of Coventry Patmore and his third wife Harriet? Please get in touch if you know.