Hi and thanks for taking the trouble checking the electoral rolls. I am aware of the double "s" spelling although the name is spelt with one "s" on Grace and Williams gravestone.Since my post I have discovered that Grace and William had a daughter, Delma Beverley, in 1936. She married Wyvern Victor Reed who was 24 years her senior and who died in 2000 in Wellington.Thanks againRegardsAlan Russell