Hi Babzi,
Thanks for getting back. This is certainly the same Catherine. if you have access to Ancestry, the tree and images are at
http://trees.ancestry.co.uk/tree/76184891/person/32343309651 (I've just added some guessed links based on your John Macauley Carrick reference: the links i am sure of are the Catherine and John Leetch records downwards. My main interest is in the Leetch connection).
The additional information i have relates to John Irwin (a date of birth which makes a link to Gateshead) adn some additional information about the military record of Catherine Irwin's husband John Dwyer Kelly (a methodist minister, WW1 major and chaplain: his diaries are in the Irish national archive PRONI. I haven't seen these, but selections are currently being serialised on a PRONI blog).
The photos some from a family collection, presumably via Edith Isabel Irwin who ended up in Liverpool where my direct family comes from (I have more, but many are not identifiable as specific people). My aunt may know more.
If you don't have access to Ancestry, I could email the details/photos
Peter