Panayiotis Aronis (Peter Aroney from Sefton; NSW)

Hi I am planning to visit Kythera next year and would be grateful for any info on my Grandfather who was born in Kythera (? Cerigo) on 24 October 1896. He was naturalised an Australian citizen in July 1927 - he changed his name to Aroney. He died in Sydney on 17 Decemebr 1963. Any information or contacts on Kythera would be most helpful.
Ray Kinch