For info:

Marriages Dec 1879 (>99%)
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Bowen Emily Newport M 11a 205
PROSSER John Newport, M 11a 205
Thomas Ann Newport M 11a 205
Wintour James Henry Newport M 11a 205

The choice:

Record_ID: 2073
Entry Number: 2
Year: 1856
Month: Jan
Day: 20
Parents Surname: BOWEN
Child Forenames: Emily
Father's Forenames: Richard
Mother's Forenames: Jane
Mother's Surname:
Place of Residence: Alvington
Occupation: Labourer
Officiating Minister: G.W. Jones Curate
Event type: Baptism
Memoranda: Daughter of
Notes:
Register Reference: P12 IN 1/5
Page No: 1
Parish_Chapel: Alvington
Soundex: B500

Record_ID: 39067
Entry Number: 301
Year: 1857
Month: Dec
Day: 25
Parents Surname: BOWEN
Child Forenames: Emily Frances
Father's Forenames: John
Mother's Forenames: Jemima
Mother's Surname:
Place of Residence: Newherne
Occupation: Refiner
Officiating Minister: Richard Davies Curate
Event type: Baptism
Memoranda:
Notes:
Register Reference: PFC209 IN 1/5
Page No: 38
Parish_Chapel: Lydney
Soundex: B500

If no-one is shouting you may just have to order a copy of the marriage cert to discover who her father was.

Of the choices you have the ALvington Emily feels a better "fit"
Firstly age in later censuses 1856
Secondly her father is a Farm Baliff, and she lives married life on a farm
Thirdly its not as though Alvington and Aylburton parishes are more than a few yards apart , blink on the A48 and you have gone from one to the next :-)

1881 Park Farm [ between Clanna, Alvington and Ayleburton Common]
James Henry Wintour abt 1853 Lydney, Gloucestershire, England Head Alvington, Gloucestershire
Emily Wintour abt 1856 Aylburton, Gloucestershire, England Wife Alvington, Gloucestershire
Minnie E.J. Wintour Alvington, Gloucestershire, England Daughter Alvington, Gloucestershire

then

1871 Aylburton
John Bown 40 Iron refiner
Jemima Bown 43
Albert Bown 8 months
Emily Bown 13
John G Bown 10
Rachael Bown 11
Thomas H Bown 7

1861
John Bowen Jemima abt 1831 Ceom Haven Head Lydney, Gloucestershire
Jemima Bowen John abt 1828 Lydney Wife Lydney, Gloucestershire
Emily Bowen abt 1858 Lydney Daughter Lydney, Gloucestershire
John G Bowen abt 1861 Lydney Son Lydney, Gloucestershire
Rachel Bowen abt 1860 Lydney Daughter Lydney, Gloucestershire

or

1871 Alvington
Richard Bower 49 Trelleck, Mon Farm Baliff
Jane Bower 46
Eliz J Bower 24
Emily Bower 15
Fanny E Ross 23

1861
Richard Bowen abt 1819 Srellie, Monmouthshire, Wales Head Alvington, Gloucestershire
Jane Bowen abt 1822 Alvington, Gloucestershire, England Wife Alvington, Gloucestershire
Elizabeth Jane Bowen abt 1847 Alvington, Gloucestershire, England Daughter Alvington, Gloucestershire
Emely Bowen abt 1856 Alvington, Gloucestershire, England Daughter Alvington, Gloucestershire
John James Bowen abt 1849 Alvington, Gloucestershire, England Son Alvington, Gloucestershire
Mary C Bowen abt 1854 Alvington, Gloucestershire, England Daughter Alvington, Gloucestershire

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