Re: the earlier posting on the Marriage record on freebmd by Heywood, could the entry in freebmd be for 'Mary Jane Burnard' rather than 'Burnaid'?
The Devon site on Rootschat has a link to baptism records for Clovelly, in which 'burnaid' isn't listed but 'burnard' is. If so, there is a baptism reference for a Mary Jane on 26th May 1826, which would be about the right year of birth, with parents given as William and Jane. In turn there is a marriage reference for a William Burnard to a Jane Jeffery on 19th Jan 1815, which could be a connection.
Maybe this is a link to the Mary Jane listed on the 1861C at 29 Johnson St, St George in the East. Maybe!