Direct descendants of John Jacob Astor IV (1864–1912)
Person b.–d. Status now Why in list Line of descent
Gregory “G. Todd” Astor 1966– Living (presumed) Only known surviving male-line grandson of JJA IV via his son JJA VI → William B. Astor III. Page notes his 3 children. JJA IV → JJA VI (“Jakey”) → William B. Astor III (1935–2008) → Gregory.
William Backhouse Astor IV 1959–2008 Deceased (would be 66 today) → included under your rule JJA IV’s male-line great-grandson; died at ~49. JJA IV → JJA VI → William B. Astor III → William B. Astor IV.
Mary Jacqueline Astor Drexel 1949–2007 Deceased (would be 76 today) → included under your rule JJA IV’s granddaughter through JJA VI.
Ivan Ivanovich Obolensky 1952– Living (presumed) JJA IV’s maternal-line grandson’s son (i.e., great-grandson of JJA IV). Listed among Ivan S. Obolensky’s children. JJA IV → Ava Alice Muriel Astor (1902–1956) → Prince Ivan S. Obolensky (1925–2019) → Ivan Jr. (1952).
David Ivanovich Obolensky 1953– Living (presumed) Brother of Ivan Jr.; likewise a JJA IV great-grandson. Children listed in father’s obit. Same as above.
Sergei Ivanovich Obolensky 1960– Living (presumed) Youngest son of Ivan S. Obolensky; JJA IV great-grandson. Same as above.
> Notes on sources:
• JJA IV’s children and branches are summarized on his page and Ava Alice’s page.
• JJA VI’s page confirms William B. Astor III (1935–2008), his son Gregory (b. 1966), and William IV (1959–2008).
• Ivan S. Obolensky’s NYT obituary lists his children Marina, Ivan, David, Sergei by name (supporting the 1952/1953/1960 births).
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Close Astor bloodlines (not direct from JJA IV, but close cousins via the British branches)
Person b.–d. Status now Relationship to JJA IV Branch
John Jacob “Johnny” Astor VIII, 3rd Baron Astor of Hever 1946– Living First-cousin branch of JJA IV (through JJA IV’s uncle’s line); prominent British peer; retired from the Lords in 2022. Hever (Baron Astor) line
William Waldorf Astor, 4th Viscount Astor 1951– Living Also cousin branch (descends from William Waldorf Astor (1848–1919), son of JJA IV’s uncle John Jacob Astor III). Viscount Astor line
Philip Douglas Paul Astor 1959– Living Younger brother of the 3rd Baron Astor of Hever; same cousin branch. Hever line
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Quick takeaways
In the Titanic line itself, the only public, clearly documented living male-line descendant is Gregory “G. Todd” Astor (b. 1966).
In the Ava Alice (Obolensky) branch, there are three likely-living male great-grandsons of JJA IV: Ivan Jr. (1952), David (1953), Sergei (1960).
Several relatives in the British peerage branches are very much alive (e.g., Johnny Astor and Viscount Astor), but they’re not direct descendants of JJA IV; they
descend from his uncle’s line.
John Jacob Astor IV (1864 – 1912) — died on RMS Titanic
├── William Vincent Astor (1891 – 1959) – no children
├── Ava Alice Muriel Astor (1902 – 1956)
│ └── Prince Ivan Sergeyevich Obolensky (1925 – 2019)
│ ├── **Marina (Maria) Obolensky (b. 1951)** – living
│ ├── **Ivan Ivanovich Obolensky (b. 1952)** – living
│ ├── **David Ivanovich Obolensky (b. 1953)** – living
│ └── **Sergei Ivanovich Obolensky (b. 1960)** – living
└── John Jacob Astor VI “Jakey” (1912 – 1992)
├── William Backhouse Astor III (1935 – 2008)
│ ├── **William Backhouse Astor IV (1959 – 2008)** – died at 49
│ └── **Gregory Todd Astor (b. 1966)** – living
└── **Mary Jacqueline Astor (1949 – 2007)** – died at 58
Closely related family branch.
John Jacob Astor III (1822 – 1890)
├── William Waldorf Astor (1848 – 1919), 1st Viscount Astor
│ └── ... → **William Waldorf Astor (4th Viscount) (b. 1951)** – living
└── John Jacob Astor (1856 – 1919), 1st Baron Astor of Hever
└── ...
└── **John Jacob “Johnny” Astor VIII (3rd Baron Astor of Hever) (b. 1946)** – living
└── **Philip Douglas Paul Astor (b. 1959)** – living
Summary of currently living or would-be-living (≤ 90 yrs old) descendants
Gregory Todd Astor (b. 1966) – only known male-line descendant of the Titanic Astor.
Ivan Ivanovich Obolensky (b. 1952)
David Ivanovich Obolensky (b. 1953)
Sergei Ivanovich Obolensky (b. 1960)
Johnny Astor VIII (3rd Baron of Hever, b. 1946)
William Waldorf Astor (4th Viscount, b. 1951)
Philip Douglas Paul Astor (b. 1959)
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