I don't know if Robert had brothers and sisters, but his father was William and his mother was Margaret Bourke. Patrick is a name that runs through each generation of my mother's family. Robert and his wife had one son, my grandfather William. The Ryans mentioned above are my mother's paternal family, her mother's family were also called Ryan and lived in Lancashire, Leeds and Bradford.
My other Ryan gr grandfather, Timothy, definitely had a brother called Patrick. Family stories say that Timothy born about 1862 in the Tipperary area went to America with his brother Patrick as young men. In 1891 Timothy was in England and living in Bury in Lancashire with his wife and first child Katie, as he is in the 1891 census with them. In 1901 he was married at Leeds Register Office, living at Harper Street, he is in Bradford by 1904 when my grandmother's youngest sister Johanna was born. As far as I know Patrick also came back from America and lived in Bradford, I would imagine if he had sons he would have called one of them Patrick. There were other brothers of Timothy and Patrick who also lived near to my mother when she was a child, I know there was a Thomas, a Joseph and James, as far as I know they were a large family.
Have you any addresses where your Ryans lived in Bradford and surrounding areas, also what other surnames are you looking for?