Mark.
This is a long shot, and I do have the 1861 Norfok, although I cannot guarantee to be able to check all of Lakenham tonight.
Well, here it is, there is Ray Long who runs the Cosford database, in Suffolk. He is a complete lunatic (like me) who spends hours doing lots of family history stuff and has one of the best web sites in the country (unlike me).
If you definitely know you have a Long family member, and have done some of th research in the first place, send him an email. He is one really nice person.
Type 'cosford database' into google, one of his emails does not work, one does.
Kevan