Hi

There is an Index to the 1841 Census on this site.
Go to Home Page/FoD Records/Census Index.

These are the only ones I can find for Oldcroft:

JAMES Mary 40 OLDCROFT 2 364/5 37
JAMES Phillip 8 OLDCROFT 2 364/5 37

But there is this one in Blakeney:

JAMES Mary 75 BLAKENEY AWRE 1 350/2 36