Question: Who was the sister of John Brodie Spence and was aScottish-born Australian author?

Context paragraphs:
John Brodie Innes: The Reverend John Brodie Innes (26 December 1815 – 19 October 1894), John Innes before 1862, was a clergyman who became a close friend of Charles Darwin at Downe in Kent, and remained a friendly correspondent for the rest of Darwin's life.

John Brodie Gilroy: John Brodie Gilroy was born 1818, it is assumed in the Newcastle upon Tyne area of England.

John Brodie (disambiguation): John Brodie (born 1935) is an American NFL Quarterback

Epic in Miami: The Epic in Miami is the name given to a National Football League AFC divisional playoff game between the San Diego Chargers and Miami Dolphins that took place on January 2, 1982 in the Miami Orange Bowl.  The game, won by the Chargers in overtime, 41–38, is one of the most famous in National Football League lore because of the conditions on the field, the performances of players on both teams, and the numerous records that were set.  It was also referred to in the "Miami Herald" as the "Miracle That Died", while "Sports Illustrated" dubbed it the "Game No One Should Have Lost".  The game aired on NBC with Don Criqui and John Brodie calling the action and Bryant Gumbel serving as the anchor.

Catherine Helen Spence: Catherine Helen Spence (31 October 1825 – 3 April 1910) was a Scottish-born Australian author, teacher, journalist, politician, leading suffragist, and Georgist.  In 1897 she became Australia's first female political candidate after standing (unsuccessfully) for the Federal Convention held in Adelaide.  Called the "Greatest Australian Woman" by Miles Franklin and given the nomenclature of "Grand Old Woman of Australia' on her eightieth birthday, Spence was commemorated on the Australian five-dollar note issued for the Centenary of Federation of Australia.

1972 San Francisco 49ers season: The 1972 San Francisco 49ers season was the team's 23rd year with the National Football League.  The 49ers appeared in the playoffs for the third consecutive year.  After an early season injury to Quarterback John Brodie, Steve Spurrier stepped in and turned things around with brilliant performances to get the 49ers back in the playoff picture by going 5-2-1 over eight games.  In the last game of the season Brodie returned in the 4th Quarter and threw two Touchdown passes to lead the 49ers to a 20-17 victory over the Minnesota Vikings, as the 49ers won the third straight Division Title with an 8-5-1 record.  In the Divisional Playoffs at Candlestick the 49ers looked poised for a return to the NFC Championship leading the Dallas Cowboys 28-13 entering the 4th Quarter.  However, the Cowboys would score 17 points to break the hearts of San Francisco again.  This would mark the last playoff appearance for the 49ers until 1981.

John Brodie Spence: John Brodie Spence (ca. 1824 – 7 December 1902), born in Melrose, Scotland, was a prominent banker and politician in the early days of South Australia.  He was a brother of the reformer Catherine Helen Spence.

John B. McDiarmid: John Brodie McDiarmid (June 6, 1913 – April 15, 2002) was a Canadian-born academic who played an important role in Canadian Naval Intelligence during World War II.  He was chairman of the Classics Department at the University of Washington, was the university’s first Professor of Humanities, and was co-founder of the Seattle Chapter of the Archaeological Institute of America.

John Guthrie (novelist): John Guthrie (9 July 1905 – 1955), real name John Brodie, was a New Zealand journalist and novelist from New Plymouth who moved to London in 1938.  He wrote several novels about New Zealand and New Plymouth.

The Green Laurel: The Green Laurel (1963) is a novel for children by Australian author Eleanor Spence; it was illustrated by Geraldine Spence.  It won the in 1964.

Supporting paragraphs: John Brodie Spence Catherine Helen Spence
Answer: Catherine Helen Spence