William Murray Geddes was the eldest son of William John and Amy Jane Emily Mary Geddes of 9 Wellesley Terrace, Princes Park and The Hillside House, Worth, Sussex.
 
A report on his death appeared in the Liverpool Echo on the 7th October 1915.
 
LIVERPOOL OFFICER.
   Captain William Murray Geddes, 2nd Wiltshire Regiment who was killed in action, was the eldest son of Mr. and Mrs. W.J. Geddes, Wellesley-terrace, Prince's Park, Liverpool, and godson of Lady Godwin, Erim Royd, Bradford. His maternal grandfather won great distinction in the Crimean and Abyssinian campaigns. Born in 1888, he was educated at the Liverpool College, Lodge-lane, where he was much liked. On leaving college he entered the Militia, and received his commission in the Regular Forces in 1909. He won a number of distinctions as a rifle shot. He was prevented from going to the front at the beginning of the war by a severe illness, but went out in June last, after being promoted to the rank of captain.

Liverpool Echo 7th October 1917

 
Probate of his estate was obtained at London on the 3rd March 1916 by his mother. His effects were valued at 4,167 15s 10d (385,000 at current values.)
 
His father died at 9 Wellesley Terrace on the 27th March 1916
 
His brother Arthur Alexander Geddes died in India in July 1916.