Hi Lisa,
the 'Maffitt' is a transcription error.
The death in Congleton looks very likely.It was registered when ages were not given so you would have to get the certificate to check. It would not give any other details than cause of death, occupation, abode and the person who registered the death.
You can apply here:
http://www.gro.gov.uk/gro/content/JJen has given you the reference.
If you also get a birth certificate for a child born in Congleton, that will give you Jane's maiden name.
Irish records did not begin until 1864 for births. There are non-Catholic marriage indexes from 1845 but James and Jane were married before that.
With the combination of two surnames, there is a slim chance that you could go further with your research but it would be difficult. You would be looking to Parish Records in Ireland and you would therefore need more specific information e.g. area and religious denomination. However, it would be good to have Jane's name also.
The GRO site has the forms for birth enquiries also.
heywood
