Help with identifying Margaret Keeley possibly (Sweeney) born in Dungarven in 1826

If you use Ancestry (you can access it at a library if you don't have a subscription), there are several family trees for the family you mention. They indicate that Margaret Keeley married a Norris.

One of their children was Catherine/Kate Norris.

She married Philip Sweeney.

When Philip died, she married James (?) Wade.

I have not seen the evidence for all of this, but you might want to look at it anyway.

Patricia - brilliant, thank you for the info. It has confirmed the earlier information that I am looking for.

In my records, one of her children was Catherine who became Sweeney and had a daughter called Victoria who married my great grandfather.

I have found the family grave in Southport, Lancashire which mentions Catherine's surname as Wade and a search on Lancs BMD has brought up her marriage to James Wade in 1880.

You might be able to help with this question if possible.

There are two marriage records on Lancs BMD for Catherine, one has the surname Sweeney and one McKeeley. Both the same area and date and ref number. Could McKeeley be a recording error?

Is there a reason for a record for both names? Was this a requirement where there had been a previous marriage?

On the headstone, there is Margaret Keeley (Catherine's mother) 

I am due to make a visit to my local library to look into it all further, so thank you for the guidance and confirming the earlier details, it is much appreciated.

Kind regards.

Andrew.