Trafford

Born during the March quarter 1898 in the Barton upon Irwell R.D. - ref:
8c/700, the son of Walter Percy & Mary Campbell Sutton (nee Ward).  The
birth was registered as "Walter Dudley Sutton".

1901 Census - Gales Brow, Flixton.  Son (Listed as Dudley Sutton) - aged: 3
- born: Flixton.  Head of household - Walter Sutton - Married - aged: 37 -
occ: Master Tailor - born: Liverpool.   Also - Mary Sutton - Wife - aged:
37 - born: Liverpool.  Plus 4 elder siblings.

1911 Census - 253 Plymouth Grove, Longsight, Manchester.   Son (Listed as
Dudley Sutton) - aged: 13 - Scholar - born: Flixton.   Head of household -
Walter Sutton - Married - aged: 48 - occ: Tailor's Cutter - born:
Liverpool.   Also - Mary Sutton - Wife - aged: 37 - born: London.  Plus 2
siblings.

Dudley probably died in the No.82 General Hospital, Istanbul.

Istanbul 1919 - Wikipedia

The Occupation of Constantinople (Turkish: Istanbul'un Isgali) (November
13, 1918 – September 23, 1923), the capital of the Ottoman Empire, by
British, French and Italian forces, took place in accordance with the
Armistice of Mudros, which ended Ottoman participation in the First World
War. The first French troops entered the city on November 12, 1918,
followed by British troops the next day. The Italian troops landed in
Galata on February 7, 1919.[2]

Allied troops occupied zones based on the sections of Constantinople and
set up an Allied military administration early in December 1918. The
occupation had two stages: the initial phase in accordance with the
Armistice gave way in 1920 to a more formal arrangement under the Treaty of
Sèvres. Ultimately, the Treaty of Lausanne, signed July 24, 1923, led to
the end of the occupation.