MOST
Of all my grandparents, my maternal grandfather, John Kilgariff, had the most siblings. He was the youngest of twelve! His parents were Patrick Kilgariff (the records have variations on the name), originally of County Mayo, Ireland, and Mary Mannion (Manion, Manning, Manen, Mann, and other variations) of County Sligo. They were married in Sligo town in the Catholic church there, on 28 December 1870. Their marriage record below is from https://www.irishgenealogy.ie/en/
His siblings were:
Mary "Minnie" (1871, County Sligo--1959, NY) [married, 1 child, no offspring]
Patrick James (1874, County Tyrone--1906, NYC) [never married]
Francis (1875, County Tyrone--1908, NYC) [married, 2 children]
Joseph Daniel (1877, County Tyrone--1945, Scotland) [married, 2 children]
Henry (1879, County Tyrone--1916, Flanders) [never married, no heirs, died in WW1]
Winifred (1880, County Tyrone--1965, NYC) [married, 2 children]
Dominick (1882, County Sligo--1961) [married, 5 children]
Margaret Jane (1884, County Tyrone--1904, Belfast, Ireland) [never married, no offspring]
Bridget (1886, County Tyrone--?) [married, 4 children]
Elizabeth (1888, County Tyrone--1957, Belfast, Northern Ireland) [never married, no offspring]
Peter (1889, County Tyrone--1886 County Tyrone) [died in infancy]
AND, finally, my grandfather, born 14 August 1890 in County Tyrone, Ireland [married, 1 child]. The family moved to Belfast at some point in time, and by the 1901 Irish Census, these siblings were still living at home:
Joseph, Winifred, Dominick, Margaret, Bridget, Elizabeth, and John
Mary, Patrick, and Francis, had already emigrated to New York City, and were living with who they named as an aunt and uncle (James and Margaret Foley), though I have not made a connection as to how that couple is actually related. Henry apparently had already emigrated to Scotland.
In the 1911, their father Patrick was already deceased, and these siblings were still living at home:
Bridget, Elizabeth ("Lizzie"), John
Bridget married in 1911, and my grandfather emigrated to NYC in 1920, and Elizabeth would have been the only one left at home with her mother. Elizabeth never married, so she would have been with her mother until the end.
By the time my grandfather was an adult, his brothers Joseph, Henry, and Dominick had already emigrated to Scotland and Patrick and Joseph had already emigrated to the USA and died. Once my grandfather emigrated to the USA, he interacted with his sister Winifred, but not with his sister, Mary, who had emigrated to the US when he was a child. Makes a bit of sense being as she was the oldest child, and he was the youngest. She had left home when he was about 6 & 1/2. He didn't really know her.
The only photos of the siblings that I have are of my grandfather, and his sister Winifred.
Both photos held by the author
Lastly, of all these siblings, the only two have descendants who still have the last name Kilgariff: Joseph and Dominick.