Looking for Peter J Montgomery Living Western Australia 1971

Looking for Peter J. Montgomery born approx. 1946. Son of Richard Peter Montgomery & Ethel June Montgomery. Brother to Thelma (born approx. 1956/57), Lynne (born Feb 1956) and Bevan. Family lived in Perth suburbs of Nedlands & Inglewood & Yokine in 1969. Peter work at Port Hedland & Cape Lambert 1971 and prior to that, worked at Groote Eylandt, NT.