Hi,
My wife has a purse that was owned by Martha Strange (Tarbox). In that there is her wedding certificate. John Strange (bachelor) and Martha Tarbox (spinster) were married on Oct 20 1832 in Hertford. The witnesses were John and Clara Tarbox. None of them signed their names, just giving their mark (X). Their ages are not given and neither is their residence, profession or parental detail.
We are also lucky enough to have access to the Strange family bible. This shows the dates of birth of the children of John and Marta Strange (according to my wife's uncle, all in Berkhampstead, it would appear):
George (1 Apr 1834)
William (4 Mar 1837)
Matthew (11 Feb 1839)
Ann (30 Apr 1842)
Emma (24 Aug 1844)
James (13 Apr 1847)
Ephraim (14 Sep 1848)
Catherine (10 Oct 1851)
Now, the bible also shows the birth dates of the previous Strange generation, so this is John Strange, plus all his siblings:
John (2 Jun 1811) - note this is 1811, not 1812 as your census suggests
George (21 Mar 1813)
James (16 Apr 1819)
Thomas (28 Jul 1822)
Sarah (21 Jan 1824)
Ann (8 Jan 1827)
Charles (11 Dec

?)
I don't have firm information about John's father but it seems likely that he may also have been named John, born in 1791 (residing in Toddington according to the 1841 census). Again, this could be a red herring, as you have pointed out.
Being as John and Martha seemingly inherited the bible from John's father, there is also a record of the dates of birth of Martha Tarbox and her siblings:
George (27 Apr 1801)
Clarah (1 Sep 1803)
Matthew (13 Feb 1805)
Richard (25 Mar 1807)
Martha (26 Dec 1809)
John (10 Mar 1812)
From research carried out by my wife's uncle, it would appear that the Tarbox childrens' parents were George Tarbox and Catherine Emmerton (who were married in the year 1800 at Great Gaddesden).
I think that is probably about it. If you have any information germane to this side of the family tree and where you fit in, then do please share.
Happy hunting, Dave.