Hi Obbie
Thank you for getting back to me.
There is some additional information but its not absolute and possibly a little confusing.

Henry does record on various census that he was born in Ireland, it may be possible that he was actually baptised in Reading.
There was a baptism at St Giles on 27th April 1817. This shows his parents unfortunatly also were called Henry and Ann. We believe that he had a sister called Arabella who married Mathew Brewerton in 1835. Although his surname may of been Brown as shown on the original index
In 1841 We believe his mother Ann was living a few doors Away from him.
In 1851 there was a Thomas Chard receiving parish relief formally Cooper born Devon Taunton.
Chard is not a common name in Berkshire and judging from the places of birth being given by Thomas and Ann (in 1851 she was 79 and stated that she was born in Uffington, Devon) the elder members of the family probably came from the South West of England.
This is supported by the fact that our Henry's wife Ann, was born in Stogumber, Somerset, England 1813
Hope this further information helps
Dominic