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Birth of Mabel McCabe gives her parents as Frederick McCabe & Mary Brown-
https://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1912/01494/1607712.pdf

In 1911 Frederick & Mary have a two year old daughter Maud-
https://www.census.nationalarchives.ie/pages/1911/Down/Pottinger__part_of_/Laganview_Street/219112/

You'll need to view Maud's death certificate on GRONI's site (pay per view).

Belfast Telegraph, 13 Sept.1955: McCabe- September 12, 1955 (suddenly), Frederick McCabe, dearly-beloved husband of Mary McCabe, 23 French Park St. Deeply regretted by his son and daughter-in-law, Joseph and Rosin McCabe, also grandchildren. 81 Beechmount Bungalows.

Could the Mary McCabe in that plot be Frederick's wife Mary?

Added-
Belfast Telegraph, 12 Feb.1963: McCabe- February 11, 1963, at her son-in-law's residence, 36 Moltke Street, Mary, dearly beloved wife of the late Frederick McCabe.
Notice on 11 Feb. says Mary died at her residence so looks like she could have been living with her daughter.

1964 there's an In Memorium Notice for Frederick and Mary inserted by their daughter and son-in-law Mabel & Maurice Fitzsimmons and granddaughter Elizabeth of 36 Moltke St.

I have a match of 477 cM. This is my half first cousin (we share a mutual grandfather). According to DNA Painter your 432 DNA match shares similar possibilities-
https://dnapainter.com/tools/sharedcmv4

One other item came up yesterday was that when Kathleen ( Kitty) Mc Kee (Mc Cabe) died she left all her worldly goods to my wife’s Aunt Kathleen Mc Cullough nee Mc Cabe . Would Kitty have had a will made out for this?? and if so what name would she have used??

Did this come from PRONI's Will Extracts? If so, can you post the full details. It may be that Kathleen McCullough was named as executor (for a Will) or administrator of the estate (if there was no valid Will) but not that Kitty left everything to Kathleen.

In 1894, the death of an 84-year-old James McGookin of Lismenary was registered by Thomas McGookin, son of the deceased with the same place of abode. Thomas cannot be in Scotland if he was in Antrim in 1894, so he could certainly be the father of your James.

I've found several instances over the years where a person registering a death in Ireland, often parent or sibling's death, gives their residence as the townland where the family lived rather than their current residence.