The main Doomsday Survey of 1086 has very little on this area. However, the survey was carried out in areas and then these regional records were all collated into the one main document.
The survey for the south west survives in Exeter Cathedral's Library and has now been digitised and made available via this link :
https://www.exondomesday.ac.uk/
See also the map of the Hundreds at the bottom of this section
The extract below relates to Winterbourne Abbas which was part of the Cerne Abbey estate