Possibly ten children of William CAUSON and Sarah PROLONGEAU: (with help from George PROLONGEAU b 1917 s/o John PROLONGEAU and Alice Jane JENKINS)

1. William John CAUSON b 1901 Piggneet (Piggoreet) s/o William Richard CAUSON/Sarah PROLONGEAN (PROLONGEAU) [Vic 13514] (not known to George)
William John CAUSON moved to NSW and married Hilda, several chn, Wm d abt 1979. (Kim Cooper)
Hilda May CAUSON d 1960 Griffith d/o Bert/Mary Jane [NSW 7881]
N104427 Sapper CAUSON William John, b 19 Apr 1901 Piggoreet, Vic, enlisted in the Australian Army 1 May 1941 at Hay NSW, Locality on enlistment: Darling Point, NSW. NOK Hilda CAUSON. Discharged 25 Oct 1945 when posting was 16th Australian Garrison Battalion [Australian War Memorial]

?2.Lily CAUSON (birth registration not found, George was not sure of the order)

3. Ethel Linda May CAUSON poss b abt 1903 Scarsdale (birth registration not found)
Ethel Linda LAWS d 1984 (no age, abt 81 yrs) Emal(?) d/o William CAUSON/Sarah Evelyn - [Vic 6192]
Ethel Linda May CAUSON m 1926 Norman Heywood LAWS [Vic 9055]
Norman Heywood LAWS b 1902 Heywood s/o Alfred Henry LAWS/Marion Albina SKIPWORTH [Vic 26865]
Norman Heywood LAWS d 1970 aged 67 yrs Malvern s/o Alfred Henry LAWS/Marian Sab(ina) SKIPWORTH [Vic 12031]

4. Bessie Evelyn CAUSON b 17 Jun 1905 Scarsdale (family, birth registration not found) m 1932 Clarence Robert GOODIE [Vic 11564]

5. Amy Lillian CAUSON b 25 Apr 1908 Scarsdale d/o William Richard CAUSON/Sarah PROLONGEAN (PROLONGEAU) [Vic 14799 as Amy Lilliam]
Amy Lillian CAUSON m 1925 Edward McKINNON [Vic 9597]

6. Francis Edwin CAUSON b 25 Sep 1913 Scarsdale s/o William Richard CAUSON/Sarah Evelyn PROLONG (PROLONGEAU) [Vic 25984] (known as Frank)
Francis Edwin CAUSON m 1936 Mildred Emily McCLELLAND [Vic 13767]
VX10670 Pte CAUSON Francis Edwin b 25 Sep 1913 Ballarat, enlisted in the Australian Army 4 Apr 1940 at Melbourne, Locality on enlistment: South Yarra. NOK Emily CAUSON. Discharged 6 Mar 1944, Posting at discharge: Intelligence Section HQ AIF [Australian War Memorial]
Mildred Emily McCLELLAND b 1919 St Arnaud d/o John Thomas McCLELLAND/Mildred Beatrice CHIVERS [Vic 14949]
Frank's funeral held in Tas. He had married for a second time. (Kim Cooper)

7. Laura Edna CAUSON b 3 Feb 1916 Scarsdale d/o William Richard CAUSON/Sarah Evelyn PROULONGEAR (PROLONGEAU) [Vic 7140]
Edna Lorraine CAUSON m 1937 Roy Edward WITTINGSLOW [Vic 7593]
Roy Edward WITTINGSLOW b 1911 Broadford s/o George WITTINGSLOW/Mary Helen SMITH [Vic 17483]
Roy Edward WITTINGSLOW d 1981 (no age, abt 70 yrs) Coburg s/o George WITTINGSLOW/Mary Ellen [Vic 22597]

8. Irene Jessie CAUSON b 17 Jun 1919 Ballarat East d/o William Richard CAUSON/Sarah Evelyn PROLONGEAN (PROLONGEAU) [Vic 485] Known as Rene.
Irene Jessie CAUSON m 1937 Joseph Richard Arthur BENSON [Vic 16988]

9. CAUSON Unnamed stillborn, child of William CAUSON/Sarah (PROLONGEAU) bur 12 Nov 1920 Staffordshire Reef Cemetery [register]

10. Ilma Louise CAUSON b 12 Sep 1921 Ballarat East? d/o William Richard CAUSON/Sarah Evelyn PROLONGEAU (Kim Cooper)
Ilma Louise BRADLEY d 9 Nov 1999 aged 78 yrs Ballarat Base Hospital, bur 10 Nov 1999 Ballarat New Cemetery.
Ilma Louise CAUSON m 28 Mar 1942 Ballarat Town & City Mission, Cecil John BRADLEY [Vic 7816] (known as Jim)
Cecil John BRADLEY b 26 Apr 1919 Ballarat East/Mt Clear s/o George Arthur BRADLEY/Ruby SARGEANT [Vic 8590]
Cecil John BRADLEY d 23 Jun 1997 aged 78 yrs Ballarat Geriatric Centre, bur 27 Jun 1997 Ballarat New Cemetery Lawn.