EventDeath Event registration number453 Registration year1873
Personal information
Family nameCLARK Given namesWalter SexUnknown Father's nameWalter Mother's nameAgnes (Campbell) Place of birthARGY Place of death Age69

DEATH OF MR.WALTER CLARK.
We regret to have to record the death of Mr. Walter Clark, of Glenara, Deep Creek, who died on Wednesday from the effects of injuries received through being thrown out of his buggy on the previous day. He was driving with his nephew, Mr. John Clark, on Tuesday afternoon, about 4 o'clock, and on going down a rather steep decline, the horse became restive, and commenced kicking. The vehicle was capsized, and the occupants were pitched out. Mr. Walter Clark was thrown down an embankment, and fell upon his head. He was rendered insensible, and was conveyed to his house, which was about a mile distant; Mr. John Clark was bruised and shaken severely, but otherwise escaped without serious injury.

Medical assistance was at once sent for, and a message was despatched for Mr. James,surgeon, of Collins-street, who has been the medical attendant of the family since the departure of Dr. Tracy for Europe. Mr. James arrived about 2 o'clock on Wednesday morning, and found that Mr. Clark was still insensible, suffering from concussion of the brain and other injuries to the head. It was seen that the case must terminate fatally, and although everything was done that science and skill could suggest, no hope was entertained. Mr. Clark remained insensible
till his death, which occurred about 4 o'clock on Wednesday afternoon. Dr.Shields of Sunbury, was also in attendance.

Mr. Clark was a very old colonist, and was very highly respected. He was a wealthy man, and had resided on his estate at Deep Creek, which was in beautiful order, for many years. His wife died a few years ago, but he
has left several young children. He was 67 years of age. and was hale, hearty, and vigorous. The horse which he was driving at the time of the accident was generally a quiet animal, and had been in his possession for some years, but it is supposed that the weight of the vehicle pressing upon it caused it to become restive.
(P.21, The Australasian, 22-3-1873.)

WAS JOHN CLARK, WALTER'S NEPHEW AND SUPERVISOR THE SAME PERSON AS WALTER'S EXECUTOR, JOHN KERR CLARK?
John Clark, Walter's nephew, described as Walter's supervisor in the report of the inquest into Walter's death, stated that Walter "knew that the horse had been given to kicking and bolting."
Another account of the accident calls John Clark Walter's cousin, but given that Walter was described as having arrived in the colony (Victoria) in 1837, the stated relationship could be another mistake. If an application for probate is found, the truth of the relationship may be revealed.

A report of Walter's funeral describes John as Walter's nephew.
"The remains of the late Mr Walter Clark, of Glenara, Deep Creek, were buried in the Presbyterian portion of the Melbourne General Cemetery on Saturday afternoon. They were followed to the grave by a large cortege, comprising many members of Parliament and old colonists. Messrs Walter Clark and Allister Clark (sons of the deceased), John Clark (his nephew), Buchanan, McBride, S.Seddon, T Seddon, and John Dougharty, acted as pall bearers. Services were conducted at the house at Bulla lately occupied by deceased, by the Rev Dr Cairns, and at the cemetery by the Rev. I. Hetherington." (P.5, Argus, 24-3-1873.)

My memory that John was Walter's executor has been confirmed by this advertisement.
Was John Kerr Clark Walter's nephew?

John Kerr Clark married Kate Robertson in 1870 in New South Wales(1) and died there in 1910(2) after having lived in Tasmania (1873-4),before returning to N.S.W. where Alister went to school from 1875, when he acted as guardian of Alister Clark(3). His widow Kate died in South America in 1926.(4) I believe that John Kerr Clark was Walter's nephew, and supervisor at Glenara at the time of Walter's death in 1873.Unfortunately no children were born in Victoria to John Kerr and Kate Clark in 1873 to absolutely confirm that John Kerr Clark was the nephew/supervisor of 1873.
(1)Empire (Sydney, NSW : 1850 - 1875) Thursday 17 February 1870 p 1 Family Notices
(2)The Daily Telegraph (Sydney, NSW : 1883 - 1930) Saturday 24 September 1910 p 12
(3)Table Talk (Melbourne, Vic. : 1885 - 1939) Thursday 30 October 1930 p 13 Article Illustrated
(4)The Daily Telegraph (Sydney, NSW : 1883 - 1930) Saturday 24 July 1926 p 6 Family Notices

Walter death notices reveal nothing about his family members.

WALTER'S WIFE.
EventDeath Event registration number8249 Registration year1865
Personal information
Family nameCLARK Given namesAnnie SexUnknown Father's nameCooper John Mother's nameSarah Wood (Paul) Place of birthBEDF Place of death Age42

CLARK.—On the 16th inst., at Glenara, Deep Creek,Annie, the beloved wife of Walter Clark, Esq., aged 42 years.
(P.4, The Age, 17-10-1965.)

THEIR MARRIAGE.
EventMarriage Event registration number1173 Registration year1857
Personal information
Family nameCLARK Given namesWalter SexMale Spouse's family nameCOOPER Spouse's given namesAnne

On the 20th inst., at St. Kilda, by the Rev. D. Seddon, M.A., uncle of the bride, Walter Clark, Esq., J.P., of Kerarbary, Lower Murrumbidgee, N.S.W., to Annie, youngest daughter of the late John Cooper,Esq., Chinnor, Oxon, England. (P.4, Argus, 22-1-1857.)

THEIR CHILDREN.
1858
EventBirth Event registration number11244 Registration year1858
Personal information
Family nameCLARK Given namesAgnes Elizabeth SexUnknown Father's nameWalter Mother's nameAnnie (Cooper) Place of birthBULLA

BARCLAY—CLARK.—On the 29th ult., at St. Peter's Presbyterian Church, St. Leonards, Sydney, by the Rev. Roger Mackinnon, John Barclay, eldest son of the late Robert Barclay, of Catrine, Ayrshire,Scotland, to Agnes Elizabeth, eldest daughter of the late Walter Clark, of Glenara, Victoria.(P.1, Argus, 11-4-1887.)

BARCLAY — January. 10, 1039. at Potts Point, Agnes Elizabeth Barclay. Aged 80 years.

BARCLAY.— The Relatives and Friends of the late Mrs. AGNES ELIZABETH BARCLAY are invited to attend her Funeral,- to leave St. Peter's Church, North Sydney, THIS DAY, after service, commencing at 3 p.m., for Presbyterian Cemetery, Gore Hill.(The Daily Telegraph (Sydney, NSW : 1931 - 1954) Wednesday 11 January 1939 p 15)

1859.
EventBirth Event registration number18607 Registration year1859
Personal information
Family nameCLARK Given namesWalter Jno SexUnknown Father's nameWalter Mother's nameAnnie (Cooper) Place of birthBULLA

EventMarriage Event registration number6427 Registration year1884
Personal information
Family nameCLARK Given namesWalt. Jno. SexMale Spouse's family nameJOHNSTON* Spouse's given namesMary Euphemia

* Aha, the Craiglee pioneer?

CLARK–JOHNSTON.—On the 7th inst., at Marli,St. Kilda, by the Rev. George Dods, B.D., Walter John Clark, Glenara, Bulla Bulla, to Mary E., youngest daughter of J. Stewart Johnston, St.Kilda.(P.1, Argus, 15-11-1884.)

EventDeath Event registration number22327 Registration year1943
Personal information
Family nameCLARK Given namesWalter John SexMale Father's nameCLARK Walter Mother's nameAnnie (Cooper) Place of birthMELBOURNE Place of deathKYNETON Age84

1861.
EventBirth Event registration number12992 Registration year1861
Personal information
Family nameCLARK Given namesAnnie SexUnknown Father's nameWalter Mother's nameAnnie (Cooper) Place of birthBULLA

CLARK—CLARK. —On the 26th ult., at Beulah, St. Leonards, New South Wales, by the Rev. P. Falconer Mackenzie, Walter Archibald Clark, youngest son of the late James Clark, of Crossbasket, Lanarkshire, Scotland, to Annie, second daughter of the late Walter Clark, of Glenara, Bulla Bulla.
(The Australasian Sketcher with Pen and Pencil (Melbourne, Vic. : 1873 - 1889) Saturday 12 August 1882 p 254)

CLARK.-On 27th inst;, in Scotland, from an affection of the lungs, Annie, wife of Walter Archibald Clark, Crutherland, East Killbride, N.B., and second daughter of the late Walter Clark, of Kerarbury and Glenora (sic, Glenara). (Cable). (The Mercury (Hobart, Tas. : 1860 - 1954) Monday 3 February 1890 p 1)

Identical wording, but with correct spelling of Glenara in:
The Sydney Morning Herald (NSW : 1842 - 1954) Saturday 1 February 1890 p 1 and page 1 of The Age and The Argus of 30-1-1890.

1864.
EventBirth Event registration number951 Registration year1864
Personal information
Family nameCLARK Given namesAlister SexUnknown Father's nameWalter Mother's nameAnnie (Cooper) Place of birthBRIG

Alister Clark (1864-1949), rosarian and sportsman, was born on 26 January 1864 at Brighton, Victoria, second son of Walter Clark and his second wife Annie, née Cooper. Walter Clark, born in Argyllshire, Scotland, in 1803, arrived in Sydney on 23 January 1838 in the Minerva, sponsored by Rev. J. D. Lang. He became a partner with Sir William Macleay in Kerarbury station on the Murrumbidgee River, and made money out of stock during the gold rush. He overlanded stock to Melbourne, took up land at Bulla and built Glenara in 1857.

After Walter Clark was killed at Glenara on 18 March 1873, Alister and his brother and sisters were cared for by a kinsman, John Kerr Clark. Alister was educated in Hobart, at Sydney Grammar School (1877-78) and later at Loretto School in Scotland under the care of relatives. In 1883 he entered Jesus College, Cambridge (B.A., 1886); he was called to the Bar at the Middle Temple on 6 November 1885. He acquired in these years a lifelong interest in plants and flowers.

Clark returned to Australia after graduating and in 1892 for £18,375 he bought Glenara, then 1030 acres (417 ha), from his father's estate. On the ship travelling back from England he had met Edith Mary, daughter of wealthy New Zealander Robert Heaton Rhodes, and they were married at St Mary's Church, Christchurch, New Zealand, on 9 July 1888. They had no children. They maintained a gracious way of life at Glenara where Clark divided his interests between sport and his garden, which he developed as a place of great charm and beauty and as a vast nursery for the propagation of roses and daffodils.

A fine horseman, Clark served as master of Oaklands Hunt Club in 1901-08. He was chairman of the Moonee Valley Racing Club from its foundation in 1917. Although never very wealthy, he raced a few steeplechasers until 1907, with modest success. The Alister Clark Stakes is his memorial at Moonee Valley. He played polo in Melbourne and New Zealand which for many years he visited annually with his wife. He was also a keen golfer, having been introduced to the game at Musselburgh, Scotland.

Clark was best known as a rosarian. He was a foundation member of the National Rose Society of Victoria in 1900 and served as its president. He put great effort and skill into developing new varieties, and his 'Lorraine Lee', 'Black Boy', 'Sunny South', 'Nancy Hayward' and many others were grown throughout Australia; they were highly regarded in the United States of America. He supplied his new varieties without charge to State rose societies for propagation and sale. He won many awards but his greatest triumph was the 1936 Dean Hole Memorial Medal of the National Rose Society (England). His rose garden survives at Glenara and a selection of his roses grows in a memorial garden in Blessington Street, St Kilda.

Clark contributed also to the development of new species of daffodils. In 1948 he received the Peter Barr Memorial Cup from the Royal Horticultural Society (England), of which he was a fellow, and vice-president in 1944-48. He believed his pink daffodil to be the world's first.

Clark was a Bulla shire-councillor for many years until 1910, and served as president several times. He was a trustee of Bulla Presbyterian Church. Very handsome, he won people with his great charm, and he had many friends. At the same time his failings were easily recognized. He was totally impractical. Money meant little to him and he never seriously applied himself to any productive business activity. But this allowed him to grace his long era in a way which would scarcely be possible in a later generation. Survived by his wife, he died at Glenara on 20 January 1949 and was buried in Bulla cemetery, leaving an estate valued for probate at £22,073.
(Australian Dictionary of Biography.)

The Wikipedia entry concentrates only on Alister's rose breeding and doesn't even mention his parents' names.
Balbethan in Oaklands Rd was part of the Glenara Estate and Walter Clark named it Glenalister, a name it retained for about 90 years.

1865.
EventBirth Event registration number20666 Registration year1865
Personal information
Family nameCLARK Given namesJessie Cooper SexUnknown Father's nameWalter Mother's nameAnnie (Cooper) Place of birthBULL

It was a chance discovery of this report of JESSIE'S WEDDING in 1891 that made me realise that although plenty had been written about Walter and his famous son, I had seen very little about the members of the family.

Jessie married the brother of Alister's wife, Edith!
EXTRACT FROM THE REPORT."A pretty wedding took place on the 30th May at St. Mary's Church, Bulla, between Mr. R. Heaton Rhodes, eldest son of the late Mr. R. Heaton Rhodes, of Christchurch, New Zealand, and Miss Jessie Clark, youngest daughter of the late Mr. Walter Clark, of " Glenara," Victoria.

As I doubted that Jessie would have died in Victoria, I tried my old trick of a Google search for MAIDEN SURNAME, GIVEN NAME , MARRIED SURNAME (Clark Jessie Rhodes) and struck gold!
JESSIE COOPER RHODES