[2] She was the first Australian woman to have been elevated to the peerage, and was the senior life peer in the House of Lords at the time of her death.

[2] She earned a Bachelor of Dental Surgery (BDS) in 1954 from the University of Sydney, where she was a resident at Sancta Sophia College, and studied in Paris at Le Cordon Bleu.

Gardner was a councillor of Westminster City Council from 1968 to 1978 and was Lady Mayoress (when her husband was Lord Mayor) during 1987–88.

He was educated at Waverley College and won a scholarship to the University of Sydney to study dentistry, winning the Arnott Prize for oral surgery in 1954.

[5] In May 1982, the year after she joined the House of Lords, Kevin was elected to Westminster City Council, where Trixie had been a councillor since 1968.

[citation needed] Baroness Gardner was appointed Member of the Order of Australia (AM) in the 2003 Birthday Honours "for service to the promotion of Australian interests in parliamentary and government circles in the United Kingdom, and to the community.