Thankyou to everyone. I do have a lot of information on this family, however my request is specifically related to Plunket's first wife Elizabeth Anderson - birth, parents, death, burial.
The information some people have posted relates to his second wife (Eliza Price). The approximate dates of both women have a birth about 1803 which is why the confusion appears.
Hence why I am trying to find a copy of the second marriage to see is he lists himself as a widow.
Thanks again for all the time and effort people are making to assist me, regards