http://www.forum.forest-of-dean.net/index.php?mode=thread&id=4438#p5262
and I'll probably get slapped down for even muttering " Yarmouth on the Isle of Wight (Hampshire)", let alone Yanworth in glorious Gloucestershire.
However I'm inclined to settle on an East London family ( Bethnal Green / Shoreditch/ Bow / Hackney) settling in the Forest in 1810- 1820 perhaps. The 1871 entry looks very confused, now given the ages of Edward and Sarah, its possible that Edward was mis heard by the Census collector, who recorded "something" in his notes, then when the Census book proper was written up it became Yarmouth, and then Norfolk was added in. Now what was recorded ?
In 1851 there is a Susan Blanch living next door, from London another clue perhaps?
1871
Edward Blanch abt 1788 Garmouth,[YARMOUTH] Norfolk, England Head Newland Gloucestershire
Sarah Blanch abt 1795 Coleford, Gloucestershire, England Wife Newland Gloucestershire
1861 Back Lane
Edward Blanch abt 1792 Battenry,[BATTERSEY !] Middlesex, England Head Newland Gloucestershire
Sarah Blanch abt 1802 Coleford, Gloucestershire, England Wife Newland Gloucestershire
1851 Whitecliff
Edward Blanch abt 1795 London, England Head Newland Gloucestershire Pottery Lab
Sarah Blanch abt 1799 Newland, Gloucestershire, England Wife Newland Gloucestershire
Fanny Blanch abt 1837 Newland, Gloucestershire, England Daughter Newland Gloucestershire
Harriette Blanch abt 1831 Newland, Gloucestershire, England Daughter Newland Gloucestershire
Jeremiah Blanch abt 1833 Newland, Gloucestershire, England Son Newland Gloucestershire
next door
Susan Blanch abt 1766 Bethnal Green, Middlesex, England Head Newland Gloucestershire
Thomas Blanch abt 1830 Newland, Gloucestershire, England Grandson Newland Gloucestershire
1841 Whitecliff
Ewd Blanch abt 1801 Gloucestershire, England Newland Gloucestershire
Sarah Blanch abt 1801 Gloucestershire, England Newland Gloucestershire
Eliza Blanch abt 1828 Gloucestershire, England Newland Gloucestershire
Fanny Blanch abt 1837 Gloucestershire, England Newland Gloucestershire
George Blanch abt 1826 Gloucestershire, England Newland Gloucestershire
Harriett Blanch abt 1830 Gloucestershire, England Newland Gloucestershire
Jeremiah Blanch abt 1832 Gloucestershire, England Newland Gloucestershire
Thomas Blanch abt 1829 Gloucestershire, England Newland Gloucestershire
Susan Saldway [??] abt 1776 Newland Gloucestershire
WILLIAM BLANCH
----------------------------------------
Marriages:
Spouse: SUSANNA WALKER
Marriage: 04 JUL 1785 Saint Leonards, Shoreditch, London, England
--------------------------------------------------------------
Messages:
Extracted marriage record for locality listed in the record.
The source records are usually arranged chronologically by the marriage date.
------------------------------------------------------
Source Information:
Batch No.: Dates: Source Call No.: Type: Printout Call No.: Type:
M040811 1764 - 1770 0396249 Film 6905089 Film
M040811 1770 - 1774 0396250 Film NONE
M040811 1774 - 1776 0396251 Film NONE
M040811 1776 - 1781 0396252 Film NONE
M040811 1781 - 1785 0396253 Film NONE
Sheet: 00
1861 Cinderford Rd
Richard Powell abt 1795 Mewland, Gloucestershire, England Head East Dean Gloucestershire
Elizabeth Powell abt 1795 Monmouthshire, Wales[Garmouth] Wife East Dean Gloucestershire
1851 nr Bridge Inn, Cinderford Bridge
Richard Powell abt 1801 Coleford, Gloucestershire, England Head East Dean Gloucestershire
Elizabeth Powell abt 1803 Yarmouth Wife East Dean Gloucestershire
George Powellabt 1845 East Dean, Gloucestershire, England Son East Dean Gloucestershire
John Powell abt 1837 Coleford, Gloucestershire, England Son East Dean Gloucestershire
Richard Powell abt 1826 Coleford, Gloucestershire, England Son East Dean Gloucestershire
1841 Whitecliff
Richd Powell abt 1801 Gloucestershire, England Newland Gloucestershire
Elizabeth Powell abt 1801 Gloucestershire, England Newland Gloucestershire
Eliza Powell abt 1826 Gloucestershire, England Newland Gloucestershire
George Powell abt 1841 Gloucestershire, England Newland Gloucestershire
James Powell abt 1832 Gloucestershire, England Newland Gloucestershire
John Powell abt 1836 Gloucestershire, England Newland Gloucestershire
Richard Powell abt 1826 Gloucestershire, England Newland Gloucestershire