Found only here, so there is no certain means of telling whether it is that of [a] a woman or [b] a place.
[a] DW: probably a simple inversion of Peisinoe, one of the Sirens (sigma 280, end). NF: perhaps connected to the Roman cognomen Piso.
[a] NF: perhaps connected with 'Pisonos?', one of the bewildering number of names borne by Siniskolon in Cappadocia (Barrington Atlas map 64 grid G3, with Directory II.990).