Question: The suburb Nicholls in Gungahlin, Australia was named after a man that died in what month?

Context articles: Palmerston, Australian Capital Territory
Taylor, Australian Capital Territory
Nicholls, Australian Capital Territory
Douglas Nicholls
Casey, Australian Capital Territory
Moncrieff, Australian Capital Territory
Gungahlin, Australian Capital Territory
Ngunnawal, Australian Capital Territory
Jacka, Australian Capital Territory
Harrison, Australian Capital Territory

Palmerston is a suburb in the Canberra, Australia district of Gungahlin.
 The postcode is 2913.
 The suburb is named after George Thomas Palmer (1784–1854) who established a settlement in the Canberra region in 1826 called Palmerville, which was later renamed Ginninderra.
 It was gazetted on 20 March 1991.
 Streets are named after mountains and mountain ranges of Australia, with the main street called Kosciuszko Avenue.
 It is next to the suburbs of Nicholls, Gungahlin, Crace and Franklin.
 It was the second suburb to be developed in the Gungahlin district, after the industrial suburb of Mitchell.
 It is bounded by Gungahlin drive and Gundaroo drive.
Taylor is a designated suburb in Gungahlin, Canberra, Australia, though the first land release is yet to be announced.
 The suburb is named after magazine publisher Florence Taylor OBE, who was editor of and writer for several Australian building industry journals including the influential "Building" magazine.
 The suburb is approximately 4 km from the Gungahlin Town Centre and 16 km from the centre of Canberra and bounded by Horse Park Drive.
 The suburb is located in north Gungahlin near the existing suburb of Ngunnawal and adjacent to the future suburbs of Casey and Moncrieff.
Nicholls is a suburb in the Canberra, Australia district of Gungahlin.
 It was named after Sir Douglas Nicholls (1906–1988) who was born at Cummeragunja Aboriginal mission, New South Wales and who was a footballer, pastor, activist and a former Governor of South Australia and was gazetted on 18 October 1991.
 Streets are named after various sportsmen and sportswomen.
Sir Douglas Ralph Nicholls, {'1': ", '2': ", '3': ", '4': "} (9 December 19064 June 1988) was a prominent Aboriginal Australian from the Yorta Yorta people.
 He was a professional athlete, Churches of Christ pastor and church planter, ceremonial officer and a pioneering campaigner for reconciliation.
Casey is a suburb in Canberra, Australia, approximately 4 km from the Gungahlin Town Centre and about 13 km from the centre of Canberra.
 The suburb is named after Richard Casey, Baron Casey an Australian politician, diplomat and later the 16th Governor-General of Australia.
 It is bound by Horse Park Drive and Clarrie Hermes Drive.
 Casey is located in north-west Gungahlin, adjacent to the suburbs of Nicholls and Ngunnawal, and the future suburbs of Kinlyside, Taylor and Moncrieff.
Moncrieff is a designated suburb in the Gungahlin district of Canberra, the National Capital of Australia.
 The name was gazetted in April 1991, with initial land releases becoming available to developers in June 2014.
 It is named after Gladys Moncrieff, an Australian singer of the 1920-1930s musical era who was dubbed 'Australia's Queen of Song'.
 The suburb is located in north Gungahlin adjacent to the existing suburb of to the suburbs of Ngunnawal, Amaroo and the future suburbs of Taylor and Jacka.
 The suburb is located approximately 4 km from the Gungahlin Town Centre and 16 km from the centre of Canberra and is bounded by Mirrabei Drive and Horse Park Drive.
Gungahlin is a suburb in the Canberra, Australia district with the same name; Gungahlin.
 The postcode is 2912.
 Gungahlin is the name for the entire district, and also the town centre, but it is also the name of the suburb which Gungahlin Town Centre is in.
Ngunnawal is a suburb in the district of Gungahlin in Canberra, Australia.
 The suburb is named in tribute to the Ngunnawal people, the original inhabitants of the area.
 The suburb was gazetted on 24 April 1992.
 Ngunnawal is adjacent to the suburbs of Nicholls, Casey and Amaroo and Taylor.
 It is bounded by Gungahlin Drive, Horse Park Drive, Gundaroo Drive and Mirrabei Drive.
Ginninderra Creek is situated near Ngunnawal's eastern boundary.
 The suburb is located approximately 4 km from the Gungahlin Town Centre and about 13 km from the centre of Canberra.
Jacka is a suburb of Gungahlin, Canberra, the National Capital of Australia.
 The suburb was gazetted on 25 April 2001 and development began in 2013.
 It had some residents at the beginning of 2014.
 The suburb is named after Albert Jacka, the first Australian to be decorated with the Victoria Cross during the First World War, receiving the medal for his actions during the Gallipoli Campaign.
 Jacka is located in north Gungahlin adjacent to the existing suburb of Amaroo and the future suburbs of Taylor, Bonner and Moncrieff.
 The suburb is located approximately 4 km from the Gungahlin Town Centre and 16 km from the centre of Canberra.
Harrison is a suburb of the district of Gungahlin in Canberra, Australia.
 The suburb is named after the former city planner Peter Harrison, who was instrumental in reviving Walter Burley Griffin's plan for the National Capital.
 The suburb is adjacent to the suburbs of Franklin, Gungahlin, Throsby, Kenny and the industrial estate Mitchell.
 Harrison's place names reflects those of "natural features, waterfalls, plains, tablelands and plateaux".
 The suburb is located approximately 2 km east of the Gungahlin Town Centre and about 10 km from the centre of Canberra.