DuffinShoolbread on Family Tree Circles

My great grandfather was John Duffin who died in a mining accident at Mary Collery Fife in March 1927.
They had numerous children , namely Mary Duffin [Shoolbread] born 1901, in Larne Ireland, JOhn Duffin Born 1903 Larne Ireland, James Duffin Born 1904 Antrim Ireland and Catherine Duffin Born 1912 Lochore Scotland.
My grandmother was Mary Duffin who married John McCormick Shoolbread and immigrated to Adelaide, South Australia in May 1927. I know these connections are correct because my grandparents had a daughter, Mary McAuley Shoolbread who only lived 3 days and was born in Dec 1925. My father Charles Shoolbread was born in Lochore on 10Jan 1923. Unfortunately, my grandparents lost all their photos on their voyage out here to Australia. One of their trunks went missing!
My question is this : Were there any other names of Duffin children. My grandmother often spoke of Aunty Anna but I can find no records of her existence. She was only a baby when my grandmother immigrated to Australia. That puts her about the same age of my father, given a year or two.
Also, I would like to know if there was a Patrick and/or Bridget Duffin who were also siblings!
My grandmother’s brother, John, who was deaf, came out to Australia to visit his sister, Mary..my grandmother….around the 1980s. I met him!
Also, James had a daughter, Annie, who migrated to the USA and married a Cargill. She lived in Painsville, Ohio. She had a son Harry Cargill who also visited us here in South Australia.

If there is anyone on this site who can relate to any of this information I would sincerely appreciate any feedback. I am now in my seventies and trying to piece together my heritage for other family members.
There was a Mick Duffin who was on this site in the last few years who was also trying to find information. I would like to connect with him if possible.
My name is Tricia Innes [ née Shoolbread}.
Thank you and here’s hoping!