Will and Catherine Sawyer

Dear all,

Do any of you know of the whereabouts or contactabouts (how they might be
contacted) of Will & Catherine Sawyer?
They were living in Hawaii in 1991 or 2 when I last spoke to them.
They sing (or sang) in JI scales and modes of their own devising with a
Serge homemade synth accompaniment, playing it at each end with a separate
keyboard each. They lived in London for a year in 1981 when I first met
them.

TIA

Lawrence Ball