You definitely have the same family as me! Good to hear from you.
John Rich of Surlingham (born 1855), and Mary Burnell (born 1867) are my great-grandparents, their first child together (my grandfather) also John(born 1895) - my mother was Jean Rich (born 1922 in Liverpool). Mary already had a son, Edward Owen, before she met John. Edward's father was apparently lost at sea. John adopted him.
I presume Jane Ann is Mary's older sister (born 1852). If that is correct, I am in touch with her descendant who lives in Kent. I have not heard before that Jane had a second/middle name Ann. Whatever, we can pursue that later.
Both Mary's and Jane's father was Jonathan Burnell (born 1826 in Holyhead). I can find no record of his actual birth - baptisms were more important in those days, and he didn't get baptised until 1873 when he and almost all his children did in a mass session! Interesting story we can discuss later, perhaps. But the one you have working as a servant in Pen Y Bonc, Holyhead, in 1841, is definitely the same one. Jonathan married Ann Jones in Holyhead on 20 June 1845.
Jonathan's father was also a Jonathan, and this, as I've already said, is where complications set in - spellings of his surname vary through Burnal/Burnall/Burnel to Burnell. There may be other variations - only by trying all possibilities do you see the fuller (but possibly not FULL) picture. Jonathan Senior was born anywhere between 1798 and 1801 apparently in Anglesey, but neither I nor any other researchers can find a record. He was already a widower in 1841. One descendant of the Burnell family, a distinguished (and retired) member of the Holyhead community, believes he originally came from South Wales, but there is currently no way of checking this out online. Other sources believe there were TWO Burnell families in Holyhead, one of them being Irish. I can find no trace of any other Burnell family, so the other alternative is that Jonathan Snr himself was in fact Irish. Further research may turn up something.
Are you on Genes Reunited? If so, let me know your details and I'll contact you and open up my tree to you - we can then take this further. Looking forward to hearing from you.