A student of Sydney Law School, he enlisted in the Australian Army in August 1914, among the first of his generation, and was made an officer of the 3rd Battalion of the 1st Infantry Brigade.

He retried with the rank of lieutenant colonel in the Citizens Military Force and was buried with a state funeral at St Andrew's Cathedral, Sydney.

[6] Sir Kenneth married Jessie Mary Grey Lillingston and their children were named Laurence, Belinda, Philippa and Roger.

[7] She was an extensive campaigner for human rights, from the women's suffrage struggle in England to the removal of Australia's constitutional discrimination against Aboriginal people in 1967.

[8] Jessie was Australia's only female delegate to the San Francisco Conference in 1945, where she played a key role in ensuring that gender was included as a non-discrimination clause in the United Nations Charter.

[9] Brigadier Geoffrey Austin Street, MP, MC (1894–1940) was a cousin of Sir Kenneth's who served as Australia's Minister of Defence in the First Menzies Government during the Second World War.

He was awarded a Military Cross for his courage in serving the Australian Imperial Force during the Gallipoli campaign, where he was wounded before returning to service in France during the First World War.

[10] He was made Minister of Defence in November 1938 and played a major role in the expansion of the military and munitions prior to the outbreak of the Second World War and pushed the National Registration Act (1939) through parliament despite strong opposition, before dying in the 1940 Canberra air disaster.

Beyond his judicial career, Sir Laurence was a prolific mediator, as well as becoming the chairman of Fairfax Media and a director of Banca Monte dei Paschi di Siena, the oldest bank in the world.

[13] Sir Laurence's sister Philippa "Pip" Street married the Australian Test cricketer John "Jack" Henry Webb Fingleton, OBE.

[15][16][17] Susan Gai Watt, AM (formerly Lady Street; born 1932) was the first wife of Sir Laurence, a graduate of the University of New South Wales and the first female chair of the Eastern Sydney Health Service.

Sylvia Emmett, AM (née Street) is a Sydney Law School (LLB) graduate, a federal judge and a lieutenant commander of the Royal Australian Naval Reserve.