Career
He represented Similkameen in the Legislative Assembly of British Columbia from 1945 to 1952 as a Liberal. Finnerty was mayor of Penticton from 1962 to 1967. He was born in Fort Frances, Ontario, the son of Patrick J. Finnerty and Clara Collins.
During World World War II, Finnerty served with the Seaforth Highlanders.
Finnerty owned an insurance business. Finnerty was defeated when he ran for reelection in 1952.
He owned radio station CKOK in Penticton and was president of the British Columbia Association of Radio and Television Broadcasters. Finnerty died in Penticton at the age of 64.