I now have a copy of the death certificate of Archibald Rock in 1885 aged 66 years at St. Finbarrs place.
I believe they must have married sometime in
the 1840s or 50s. Their daughter Margaret was born
around 1854ish possibly Cork City also.
We believe Margaret Rock came from St. Helena although we don't know anything for certain. I do have a copy of a photograph of Archibald Rock and Margaret Palmer. Margaret looks very french!
Anyway that's very sketchy on the Rock side of the family. I did visit Ireland with my mum but we found out more about the Hassell side which is when Maragret Rock (daughter of Archibald and Margaret Palmer) married Edward Hassell.
What info do you have?