Ava Lowle Willing
Ava Lowle Willing( September 15, 1868 – June 9, 1958) was an American socialite.
She was the first wife of Colonel John Jacob Astor IV and later married Thomas Lister, 4th Baron Ribblesdale.
Brooke Astor
Roberta Brooke Astor (née Russell; March 30, 1902 – August 13, 2007) was an American philanthropist, socialite, and writer who was the chairwoman of the Vincent Astor Foundation, which had been established by her third husband, Vincent Astor, son of John Jacob Astor IV and great-great grandson of America's first multi-millionaire, John Jacob Astor.
Brooke Astor was the author of two novels and two volumes of personal memoirs.
Jakie Astor
Major Sir John Jacob Astor VII,( 29 August 1918 – 10 September 2000) was an English politician and sportsman.
He was a member of the prominent Astor family.
Lillian Baynes Griffin
Lillian Baynes Griffin( 1871–1916) was a British- born American journalist and photographer who contributed to publications including the" New York Times" and" Vanity Fair".
Her article topics ranged from medical treatments and art criticism to gardening, needlework and Rose Pastor Stokes, and among her portrait subjects were Grover Cleveland ’s family, John Jacob Astor VI, Winslow Homer and European royalty.
She was the sister of the naturalist Ernest Harold Baynes( 1868 – 1925) and the wife of the artist Walter Griffin( 1861–1935).
Ava Alice Muriel Astor
Ava Alice Muriel Astor( July 7, 1902 – July 19, 1956) was an American heiress, socialite, and member of the Astor family.
She was the daughter of John Jacob Astor IV and Ava Lowle Willing, and sister of Vincent Astor and half- sister of John Jacob Astor VI.
John Jacob Astor III
John Jacob Astor III( June 10, 1822 – February 22, 1890) was an American financier, philanthropist and a soldier during the American Civil War.
He was a prominent member of the Astor family, becoming the wealthiest member in his generation and the founder of the English branch of the family.
John Jacob Astor VI
John Jacob "Jakey" Astor VI (August 14, 1912 – June 26, 1992) was an American socialite, shipping businessman, and member of the Astor family.
He was dubbed the Titanic" Baby" for his affiliation with the RMS "Titanic"; Astor was born four months after his father, Colonel John Jacob Astor IV, died in the sinking of the "Titanic"; his pregnant mother Madeleine Astor survived the sinking.
Astor was known for his legal battles with the estate of his elder half-brother, Vincent Astor, to inherit a larger portion of their father's $85 million fortune (approximately $ billion in dollars).
He was also known for his many engagements and four marriages to prominent society women.
William Youmans
William Youmans is an American Broadway, film and television actor and singer, best known for originating the roles of John Jacob Astor in" Titanic: the Musical", and Doctor Dillamond in" Wicked".
Madeleine Astor
Madeleine Talmage Force Fiermonte (June 19, 1893 – March 27, 1940) was an American socialite and a survivor of the .
She was also the second wife and widow of businessman John Jacob Astor IV.
John Jacob Astor, 1st Baron Astor of Hever
Lieutenant- Colonel John Jacob Astor V, 1st Baron Astor of Hever, DL( 20 May 1886 – 19 July 1971) was an American- born English newspaper proprietor, politician, sportsman, military officer, and a member of the Astor family.

Question: What is the date of death of John Jacob Astor Vi's mother?