As you say, there are a number of Public Members' Trees on Ancestry
They give the marriage of Mary MORGAN - 8 September 1814 at Llandefeilog, Carmarthenshire, Wales
If you look at the 1851 census at Chepstow
Nelson Street
Mary WALTERS - Widow - 65 - born Gloster Aust
Thomas - son - age ? Rigger, born Chepstow Monmouth
Jane - daughter - 26 - Drefs maker - born Chepstow
William - Grandson - 11 months
Rd?/Thos? MORGAN, visitor - unmarried - age 18 - born Monmouth, Chepstow
???
If the name is Richard
Baptism at Chepstow - 21 December 1832
Richard Smith MORGAN, parents: William (occupation, Cooper) and Susanna, residence: Nelson Street
(Nelson Street, mentioned in your message)
1841 Census, Chepstow, Nelson Street
Susan MORGAN - 40
Maria - 10
Richard - 8
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Notice on Public Members Tree, Thomas & Mary WALTERS, first son is named William
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(there are a couple of MORGAN's on the 1851 census born Aust, Gloucestershire)
? going through the 1851 census, seeing who say they were born in Aust - these include a Mary Bevan C1782 and she is on the 1841 census, Henbury, Almondsbury, District 13 - 6 pages - almost impossible to read.
However, 1841 census District 13 - page 3 of 6 (inc Mary BEVAN)
'District 13 - The whole of the Parish of Aust including Cole House and Farm in the Parish of Alveston.'
William MOGAN - 45
Hannah - 45
Eliza - 6
Anna - 6
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1851 Census, Glos Aust
William MORGAN - 55 - born Glos. Littleton (Littleton Upon Severn is approx 3 miles from Aust)
Hannah MORGAN - born Olveston
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1861 Census, Henbury, Almondsbury, District 12
Aust Tything
William MORGAN - 62 - born Thornbury
Hannah - 63 - born Olveston
Charlotte - grand-daughter - 4 - born Aust
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the 1851 census for Aust, Glos : Is Almondsbury, Parish of Alveston
Aust - comes under Thornbury District
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Looking at National Archives: 'The Aust Register 1709 to 1812 has not been found'
Aust
http://www.visionofbritain.org.uk/place/10338
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On the Church of Latter Day Saints: The baptisms of William & Hannah MORGAN are at Aust St John from 1827
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