This figure is unique in being on the chamfer of a doorway of a dwelling-house (currently up for sale)
which incorporates various granite fragments of a nearby 12th century church or abbey
destroyed during the Wars of Religion or the Revolution.
It bears a resemblance to several post-Romanesque, Insular sheela-na-gigs
in the heart-shaped torso, the tiny breasts, and the crude, annular vulva.
It seems to be wearing a head-dress or an elaborate coiffure.
A similar Romanesque exhibitionist can be seen (also on a doorway, but sideways) at Liathmore in Ireland.
Compare also with two more Irish examples:
Redwood Castle (Tipperary)
Cloghane Castle (Roscommon)
A granite fireplace in the same house at Rânes has this mask-like head with an abstract, curlicue body beneath it.