Well-spotted Mike, a very helpful report from 1951 I see, wrt FreeBMD;

Surname First name(s) Age District Vol Page
Deaths Jun 1951 (>99%)
MORGAN Alexander T 83 F.of Dean 7b 354

So it's a little disappointing that Cinderford's "Mercury" in 1951 thought that tin was once mined in the Forest. Of course some Cornish tin-miners had moved here for work, including to Cinderford, hopefully that was in the writer's thoughts when making this typo error.
Not for the first time either.
http://www.forum.forest-of-dean.net/index.php?id=25006

From this site's parish Records can find full details of the Marriage reported by MPG;

Record_ID: 10042
Entry_Number: 266
Year: 1904
Month: Dec
Day: 3
Grooms_Surname: WADDLEY
Grooms_Forenames: George
Grooms_Age: 22
Groom_Condition: Bachelor
Grooms_Occupation: Collier
Grooms_Residence: Forge Hill Lydbrook
Grooms_Fathers_Surname: WADDLEY
Grooms_Fathers_Forenames: William
Grooms_Fathers_Occupation: Tin Plate Worker
Brides_Surname: HERBERT
Brides_Forenames: Eliza
Brides_Age: 22
Brides_Condition: Spinster
Brides_Occupation:
Brides_Residence: Forge Row Lydbrook
Brides_Fathers_Surname: HERBERT
Brides_Fathers_Forenames: Edward
Brides_Fathers_Occupation: Collier
Licence_or_Banns: Banns
Date_of_Banns:
Signature_or_Mark: he mark she sign
Witness_1: George Hussey
Witness_2: Blanche Ball
Other_Witnesses:
Officiating_Minister: [not stated]
Event: Marriage
Memoranda:
Notes: Not signed by vicar
Register_Reference: P208 IN 1/5
Page_Number: 133
Parish_Chapel: Lydbrook
Soundex_Groom: W340
Soundex_Bride: H616

And Baptism of possible son ?;

Record_ID: 166558
Entry_Number: 165
Year: 1905
Month: Sep
Day: 3
Parents_Surname: WADLEY
Child_Forenames: Malvin son of
Fathers_Forenames: George
Mothers_Forenames: Elizabeth
Mothers_Surname:
Residence: Lydbrook
Occupation:
Officiating_Minister: Saml C Laulmans
Event: Baptism
Memoranda: 2 1/2 weeks
Notes:
Register_Reference: D2598 9/2
Page_Number: 46
Parish_Chapel: Lydbrook Wesleyan Methodist
Soundex: W340

This site's PRs carry more Wadleys in Lydbrook area c1900-1940s, altho unsure how related if at all.

Searching FreeBMD gives following birth to Waddley/Herbert (note only births recorded post 1911 include mother's maiden name); http://www.freebmd.org.uk/cgi/search.pl

Surname First name(s) Mother District Vol Page
Births Jun 1914 (>99%)
WADDLEY Ernest G Herbert Bedwellty 11a 138

and searching again for Wadley/Herbert, in case of error;

Surname First name(s) Mother District Vol Page

Births Sep 1911 (>99%)
WADLEY Ila Herbert Bedwelty 11a 125

Surname First name(s) Mother District Vol Page

Births Sep 1916 (>99%)
Wadley Charles Herbert Bedwellty 11a 99
Wadley Iris Herbert Bedwellty

As said can only find Births with mother's maiden name post 1911.
Before then can find this birth registered during Oct/Nov/Dec of 1907

Surname First name(s) District Vol Page
Births Dec 1907 (>99%)
WADDLY George Henry Bedwellty 11a 76

Bedwelty District includes Treherbert as per MPG's post, see
http://www.freebmd.org.uk/cgi/districts.pl?r=126076981:5788&d=bmd_1414456093

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WARNING NOTE !
Searching Ancestry also shows a different George Henry Wadley living in the same general area; his Will shows he dies 14 Feb 1955, of 41 Australia Rd Cardiff, leaving £1705 to Elizabeth Wadley, widow. Unfortunately no age given.

However I don't think this relates to our George ?.
Both George Henry's Ancestry Death Index Record and the excellent set of father George's WW1 Pension Records both give George Henry's birthdate of 7th October 1907, Bedwelty District, as all previously stated by MPG (who always posts accurately & relevantly, unlike this amateur!).

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I see the Abertillery coal mines where father George worked c1911 were still being worked into the 1980s, see
http://www.abertillery.net/picpages/cwmtillerycollierypast.html
http://www.abertillery.net/picpages/roseheyworthcolliery.html

However I wonder if son George Henry was also involved in coal mining, given his passing-away in the important mining area of Clifton, Nottingham ? See

http://www.dmm.org.uk/company/n1005.htm
http://www.bbc.co.uk/nottingham/content/articles/2008/10/14/pit_first_impressions_featu...
http://www.healeyhero.co.uk/rescue/pits/Clifton/Clifton-A.html
http://coalmine.proboards.com/thread/294/pits-nottinghamshire