I have a Robert Breen born circa 1830 Ireland, possibly married to a MARY. They had a son wILLIAM born circa 1855 in Ireland, and he married a Mary Loftus in Co Durham in 1877. So the family migrated to England sometime after William's birth 1855 -. By 1871 a Robert and Mary Breen appear in the census for Tow Law, Wolsingham, Co Durham. One of William's sons was John Robert Breen, my grandfather.
Would love to learn more abour Robert Breen's ancestry.