Hi again, Rosalie,
I managed to get down the CCRO for an hour today (hope to go again tomorrow, for those waiting further down my list), and tried to clarify your FORDHAM family in Whittlesea - but I think I've only managed to muddy the waters; that's family history research for you!
However, I looked in the St. Mary's Whittlesea registers, and details of the marriage you wanted were:
05-01-1841: Joseph STACEY (x) full age bac. lab. of Foster Lane, Whittlesey, his father Joseph STACEY lab. to
Sarah FORDHAM (x) minor, spinster ser.(servant?) of Crab End Whittlesey, her father Robert FORDHAM lab. Witnesses: Henry FORDHAM (x), Ann FORDHAM
Now, looking for Sarah FORDHAM's siblings, I noticed baptisms here for 1811, 1813, 1815, 1817, 1821, 1827 and 1832. But when I looked them up they were all, apart from the 1832 one, FORDHAM children born to William FORDHAM and Elizabeth ADDISON who were married here on 12-06-1810.
These children, in order, were Elizabeth Addison, Thomas Addison, Ann, Alice, William Henry and George William (all with FORDHAM surname of course, Alice's spelt as "Foredom")
On 08-06-1832 a William FORDHAM was baptised, s. of Robert and Elizabeth, of Northside, Whittlesea, lab. (Your Sarah's brother?)
There were several further marriages involving this generation of FORDHAM's until 1846, and if you want these I'll PM you...
I looked then briefly in Whittlesey, St Andrew, and found one baptism of a child of Robert and Elizabeth FORDHAM:
11-06-1826: John Hare FORDHAM s. of Robert and Elizabeth of North Bank.
There were also some other baptisms here at St Andrew's for William and Elizabeth FORDHAM - will PM them if you want them.
So no sign of a baptism for Sarah FORDHAM in Whittlesey St Mary's or St. Andrew's and her other brothers and sisters - she's probably lurking in a nearby parish, no doubt. Sorry I haven't been more successful...
Very best wishes,
Keith
p.s Couldn't find an elder sister Mary, either, as the last FORDHAM entry was in 1846...