Henrietta Butler was born in Ireland. This was "known" in the family and is also corroborated by census records (for example in 1901 where she is said to be born in Ireland).
Henrietta was supposedly the seventh child in the family and so far I have identified six children. Her daughter Dora (my grandmother) was supposedly the seventh child of a seventh child (hence having supernatural powers) ! The information I have confirms that Dora was the seventh child of John and Henrietta Ward.
Most of the information on the Butler Family is corroborated with other evidence but Irish records are not very complete (lack of census records for example) so there remains some possibility of errors so treat with care. In particular I would be very interested in more proof that Benjamin Butler married Elizabeth Watchorn