David Connell Ireland and Rotherhithe Surrey UK

I am looking for David Connell born abt 1786 possibly in Ireland. Died 1855 in Rotherhythe, Surrey, UK. David Married Margaret Britton/Britten in January 1809.
I would like to track David Connell back further. If anyone has any othe information on this family I would be very pleased to hear from them.
Thank You Jean