Background
Fennessy was born at Warrnambool to police superintendent Pierce Fennessy and Mary Kenafick.
Fennessy was born at Warrnambool to police superintendent Pierce Fennessy and Mary Kenafick.
He attended Street Thomas" Christian Brothers College at Clifton Hill and became a boot trader in 1922.
On his return in 1944 he was a public servant with the Navy Department until 1950, when he became an industrial officer with the Victorian Federated Clerks" Union. Fennessy increased his activity in the union movement, becoming a Trades Hall Council delegate (1950-1954) and Secretary of the ACTU Commonwealth Public Service Steering Committee (1952-1955). In 1955 he was elected to the Victorian Legislative Assembly as the Labor member for Brunswick East, serving as a backbencher until 1970.
After leaving parliament he was Chairman of the Victorian Environment Protection Council (1970-1978) and a member of the Develop Victoria Council (1972-1978).