A former City of Penrith mayor, he was an Australian Labor Party member of the New South Wales Legislative Assembly from 1971 to 1988.
His surname at birth was Moore but he was fostered at ten months to Elizabeth Mulock (née Goode).
Mulock was an outstanding sportsman at school and subsequently played first grade cricket between 1949 and 1962 for the St George, Waverley and Cumberland Clubs.
He was admitted as a Solicitor of the Supreme Court on 2 September 1955 and started his own practice in Penrith on Sydney's western outskirts.
On 20 March 1987, Mulock and Premier Barrie Unsworth (who had taken over from Wran the previous year) concluded a Commonwealth/State agreement that resulted in the establishment of the University of Western Sydney in 1989.
[2] On 10 February 1984, Mulock's strong performance and personal popularity led to him becoming Deputy Premier after the retirement of Jack Ferguson.
He was opposed by both major ALP factions and Wran, his chief rivals for the job having been the left-wing Frank Walker and the right-wing Terry Sheahan.
In 2013, Pope Francis appointed Ron a Knight Commander of the Order of St Gregory the Great ‘for dedication to the faith and service to the community’.