His ancestry is unknown. Not son of Titus Flavius Sabinus.

From Wikipedia:

Lucius Vibius Sabinus (died 83 or 84) was a Roman Senator that lived in the 1st century. Little is known on his family however Sabinus originally came from a family of consular rank. There is a possibility, Sabinus was related to Lucius Junius Quintus Vibius Crispus and his brother Quintus Vibius Secundus. Lucius Junius Quintus Vibius Crispus served as a Legatus in Hispania Citerior and was three times suffect consul during the reigns of Roman Emperors Nero 54-68, Vespasian 69-79 and Domitian 81-96. Quintus Vibius Secundus served as a suffect consul in 86 and in 113 served as Proconsul in the Province of Asia.

In an uncertain year, Sabinus was honoured and served as suffect consul. Sabinus also served as a Proconsul of Asia. Sabinus was possibly a friend to the Roman Senators Gnaeus Arrius Antoninus, Marcus Annius Verus and future Roman Emperor Trajan.

Sabinus between 81-82 married Trajan’s niece Salonina Matidia. In 83, Matidia bore Sabinus a daughter called Vibia Sabina (83-136/137). Shortly after his daughter’s birth, Sabinus died. Vibia Sabina would marry her distant maternal cousin and Trajan’s heir, future Emperor Hadrian and become a Roman Empress.

The daughter and youngest child born to Roman Emperor Marcus Aurelius and Roman Empress Faustina the Younger, minor princess Vibia Aurelia Sabina (170-died before 217), thus was a great, great niece to Vibia Sabina was named in honour of Lucius Vibius Sabinus and his daughter Vibia Sabina.

Sources

• Tacitus - The Annals of Imperial Rome
• http://www.roman-emperors.org/goodemp2.htm
• Trajan: Optimus Princeps : a Life and Times, By Julian Bennett, Edition: illustrated published by Routledge, 1997 ISBN 0415165245, 9780415165242
• Marcus Aurelius: a biography By Anthony Richard Birley Edition: 2, revised, illustrated Published by Routledge, 2000 ISBN 0415171253, 9780415171250

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ID: I86632

Name: Lucius Vibius Sabinus

Given Name: Lucius Vibius

Surname: Sabinus

Sex: M

_UID: B8A4D63EE202694287CFA823C7987B6D67D7

Change Date: 18 Oct 2005

Death: deceased

Father: Titus Flavius Sabinus

Mother: Flavia Julia Flavius b: 64

Marriage 1 Solona Matilda

Married:

Children

Matilda Sabinus

Forrás / Source:

http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&i...

•Given Name: Lucius Vibius •Surname: Sabinus •Sex: M

•Death: 97

Father: Flavius SABINUS Mother: Julia

Marriage 1 Salonia Matidia Children 1. Matidia SABINA 2. Vibia SABINA b: 85

http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=dblocher&...

Lucius Vibius Sabinus

Lucius Vibius Sabinus (died 83 or 84) was a Roman Senator who lived in the 1st century.

Little is known about his family, but he came from a family of consular rank. He may have been related to Lucius Junius Quintus Vibius Crispus and his brother Quintus Vibius Secundus. Lucius Junius Quintus Vibius Crispus served as a legate in Hispania Citerior and was three times suffect consul during the reigns of Nero (54-68), Vespasian (69-79), and Domitian (81-96). Quintus Vibius Secundus served as a suffect consul in 86 and in 113 served as Proconsul in the Province of Asia.

In an uncertain year, Sabinus was honoured and served as suffect consul. Sabinus also served as a Proconsul of Asia. Sabinus was possibly a friend to the Senators Gnaeus Arrius Antoninus and Marcus Annius Verus, and the future emperor Trajan.

Around the years 81-82, Sabinus married Trajan’s niece Salonina Matidia. In 83, Matidia bore Sabinus a daughter called Vibia Sabina (83-136/137). Shortly after his daughter’s birth, Sabinus died. Vibia Sabina would marry her distant maternal cousin and Trajan’s heir, the future emperor Hadrian.

Source :

https://en.wikipedia.org/wiki/Lucius_Vibius_Sabinus