Mona, Pauline and Dessie were my aunts and uncle. There were four other siblings, William (my father), Seamus (who died in the 1918 flu), Joseph, and Sean. They are all now deceased. My grandfather, also William Toner, had five siblings, Ciss, Jim, Margaret, Johnny, and Peter. I never met Peter. I was told that he was a bit ‘wild’ and had gone to England!
So there is
William
Seamus/James
Joseph
Sean/John
Mona/ Mary
Pauline
Dessie/Desmond
Earlier generation
William
Cis
Jim
Margaret
Johnny
Peter
I had this earlier generation as
1 Peter 1876 married Elizabeth Carroll in 1898
2 William 1878 married Ellen Strafford 1907
3 John 1882
4 Norah 1886 Likely the one who died as not in 1901 Census with family
5 Margaret 1889
6 James 1891 - 1956 married Margaret Lawlor 1920 a daughter Johanna died 1971 and two posted earlier.
7 Catherine 1894 likely married John Roberts but marriage not found