You need to give a few more details. Were his parents Walter and Rhoda Smith and his wife Clementine from Penault, Mon? If so you can find him on Commonwealth War Graves on the internet. He was with Oxford and Bucks Regiment and buried at Coriano Ridge War Cemetery. Sorry I have not got time to go further than this but he looks like the only Mark Smith from the right sort of area. You can check them all yourself if this is not right.

Name: SMITH, MARK
Initials: M
Nationality: United Kingdom
Rank: Corporal
Regiment/Service: Oxford and Bucks Light Infantry
Unit Text: 7th Bn.
Age: 29
Date of Death: 16/09/1944
Service No: 5381068
Additional information: Son of Walter and Rhoda Smith;
husband of Clementine Molly Smith, of Penault, Monmouthshire.

Casualty Type: Commonwealth War Dead
Grave/Memorial Reference: XVIII, K, 4.
Cemetery: CORIANO RIDGE WAR CEMETERY

The Roll of Honour in Coleford was , I believe the work of Chris Howell honorary chaplain to Coleford Royal British Legion - might be worth contacting ...

<><><> trying to get a "fix" on this Mark SMITH 1915 ish

Name: Clementine Molly Smith
Birth Date: 4 Dec 1912
Death Registration Month/Year: Mar 2001
Age at death (estimated): 88
Registration district: Monmouth
Inferred County: Gloucestershire, Herefordshire, Monmouthshire
Register number: A18D
District and Subdistrict: 8391A
Entry number: 46

Surname First name(s) Spouse District Vol Page
------------------------------------------------------
Marriages Sep 1939 (>99%)
----------------------------------------------------
Smith Mark Oxford 3a 7038
Wilkins Molly Oxford 3a 7038

Name: Clementine M Wilkins
Year of Registration: 1912
Quarter of Registration: Oct-Nov-Dec
Mother's Maiden Name: Bevan
District: Monmouth (1837-1939)
County: Gloucestershire, Herefordshire, Monmouthshire
Volume: 11a
Page: 65

<><><> possible Walter /Rhoda SMITH family

1900 SMITH May Walter Rhoda Ruspidge Cinderford Collier Cinderford St John
1909 SMITH Caroline (Rhoda) Edith Walter Rhoda Ruspidge Labourer Cinderford St John
1909 SMITH Vera Christobel Walter Rhoda Cinderford Bridge Labourer Cinderford St John
1909 SMITH Elizabeth Walter Rhoda Cinderford Bridge Labourer Cinderford St John
1909 SMITH Eva Agnes Walter Rhoda Cinderford Bridge Labourer Cinderford St John
1909 SMITH Joseph Walter John Walter Rhoda Cinderford Bridge Labourer Cinderford St John
1911 SMITH Dorothy Walter Rhoda Cinderford Bridge labourer Cinderford St John
1913 SMITH Mary Ann Walter Rhoda Soudley collier Cinderford St John

1911
SMITH WALTER M 1877 34 Westbury on Severn Gloucestershire
SMITH RHODA F 1882 29 Westbury on Severn Gloucestershire
SMITH CAROLINE E F 1908 3 Westbury on Severn Gloucestershire
SMITH DOROTHY F 1911 3 MONTHS Westbury on Severn Gloucestershire
SMITH ELIZABETH F 1904 7 Westbury on Severn Gloucestershire
SMITH EVA A F 1905 6 Westbury on Severn Gloucestershire
SMITH JOSEPH H J M 1907 4 Westbury on Severn Gloucestershire
SMITH MAY F 1901 10 Westbury on Severn Gloucestershire

1901
Joseph Pritchard abt 1857 Titern Abby, Monmouthshire, Wales Head East Dean, Gloucestershire
Alice Pritchard abt 1846 Clearwell, Gloucestershire, England Wife East Dean, Gloucestershire
Rhoda Smith abt 1882 Coleford, Gloucestershire, England Boarder East Dean, Gloucestershire
William Smith abt 1898 Ruspidge, Gloucestershire, England Son East Dean, Gloucestershire
Mary [MAY] Smith abt 1900 Ruspidge, Gloucestershire, England Daughter East Dean, Gloucestershire
Sydney Hyde abt 1878 Ruspidge, Gloucestershire, England Boarder East Dean, Gloucestershire

Surname First name(s) District Vol Page
--------------------------------------------------
Marriages Mar 1898 (>99%)
-------------------------------------------------------------
Brown Rhoda Westbury S. 6a 324
Smith Walter Westbury 6a 324

1891
Joseph Pritchard abt 1854 Tintern; Abbey, Monmouthshire, Wales Head East Dean, Gloucestershire
Alice Pritchard abt 1847 Clearwell, Gloucestershire, England Wife East Dean, Gloucestershire
Rhoda Brown abt 1882 Coleford, Gloucestershire, England Adopted Daughter East Dean, Gloucestershire

1881
Mark Smith abt 1851 East Dean, Gloucestershire, England Head East Dean, Gloucestershire
Caroline Smith abt 1853 East Dean, Gloucestershire, England Wife East Dean, Gloucestershire
Walter Smith abt 1877 East Dean, Gloucestershire, England Son East Dean, Gloucestershire
William Smith abt 1879 East Dean, Gloucestershire, England Son East Dean, Gloucestershire
John Smith abt 1882 East Dean, Gloucestershire, England Son East Dean, Gloucestershire
Emma Beatrice Smith abt 1883 East Dean, Gloucestershire, England Daughter East Dean, Gloucestershire
Maryann Eliza Smith abt 1886 East Dean, Gloucestershire, England Daughter East Dean, Gloucestershire

takes us back to
http://www.forum.forest-of-dean.net/index.php?id=18855

--
Ἀριστοτέλης A Gloster Boy in the Forest of Dean ><((((*>

Thank you both very much for your kind help.

Mark was indeed the son of Rhoda and Walter Smith; you've given me some more information to go on now which is brillant!!

Kind regards
Jo