Lucius Caesennius Antoninus (c. 95 – after 128) was a Roman aristocrat. He was suffect consul for the nundinium of February to March 128 with Marcus Annius Libo as his colleague.^[1]

His ancestry is uncertain. Ronald Syme stated that it was possible he was the son of Lucius Caesennius Sospes, consul in 114, but in a footnote Syme admitted Antoninus could be the grandson of his brother Lucius Junius Caesennius Paetus, consul in 79.^[2]

Nerva–Antonine family tree

Q. Marcius Barea Soranus

Q. Marcius Barea Sura

Antonia Furnilla

M. Cocceius Nerva

Sergia Plautilla

P. Aelius Hadrianus

Titus
(r. 79–81)

Marcia Furnilla

Marcia

Trajanus Pater

Nerva
(r. 96–98)

Ulpia^[i]

Aelius Hadrianus Marullinus

Flavia^[ii]

Marciana^[iii]

C. Salonius Matidius^[iv]

Trajan
(r. 98–117)

Plotina

P. Acilius Attianus

P. Aelius Afer^[v]

Paulina Major^[vi]

Lucius Mindius (2)

Libo Rupilius Frugi (3)

Salonia Matidia^[vii]

L. Vibius Sabinus (1)^[viii]

Paulina Minor^[vi]

L. Julius Ursus Servianus^[ix]

Matidia Minor^[vii]

Suetonius?^[x]

Sabina^[iii]

Hadrian^[v]^[xi]^[vi] (r. 117–138)

Antinous^[xii]

Julia Balbilla?^[xiii]

C. Fuscus Salinator I

Julia Serviana Paulina

M. Annius Verus^[xiv]

Rupilia Faustina^[xv]^[xvi]

Boionia Procilla

Cn. Arrius Antoninus

L. Ceionius Commodus

Appia Severa

C. Fuscus Salinator II

L. Caesennius Paetus

Arria Antonina

Arria Fadilla^[xvii]

T. Aurelius Fulvus

L. Caesennius Antoninus

L. Commodus

Plautia

unknown^[xviii]

C. Avidius Nigrinus

M. Annius Verus^[xv]

Calvisia Domitia Lucilla^[xix]

Fundania^[xx]

M. Annius Libo^[xv]

Faustina^[xvii]

Antoninus Pius
(r. 138–161)^[xvii]

L. Aelius Caesar^[xviii]

Avidia^[xviii]

Cornificia^[xv]

Marcus Aurelius
(r. 161–180)^[xxi]

Faustina Minor^[xxi]

C. Avidius Cassius^[xxii]

Aurelia Fadilla^[xvii]

Lucius Verus
(r. 161–169)^[xviii] (1)

Ceionia Fabia^[xviii]

Plautius Quintillus^[xxiii]

Q. Servilius Pudens

Ceionia Plautia^[xviii]

Cornificia Minor^[xxiv]

M. Petronius Sura

Commodus
(r. 177–192)^[xxi]

Fadilla^[xxiv]

M. Annius Verus Caesar^[xxi]

Ti. Claudius Pompeianus (2)

Lucilla^[xxi]

M. Plautius Quintillus^[xviii]

Junius Licinius Balbus

Servilia Ceionia

Petronius Antoninus

L. Aurelius Agaclytus (2)

Aurelia Sabina^[xxiv]

L. Antistius Burrus (1)

Plautius Quintillus

Plautia Servilla

C. Furius Sabinus Timesitheus

Antonia Gordiana

Junius Licinius Balbus?

Furia Sabina Tranquillina

Gordian III
(r. 238–244)

(1) = 1st spouse
(2) = 2nd spouse
(3) = 3rd spouse
  Reddish-purple indicates emperor of the Nerva–Antonine dynasty
  lighter purple indicates designated imperial heir of said dynasty who never reigned
  grey indicates unsuccessful imperial aspirants
  bluish-purple indicates emperors of other dynasties
dashed lines indicate adoption; dotted lines indicate love affairs/unmarried relationships
Small Caps = posthumously deified (Augusti, Augustae, or other)

Notes:

Except where otherwise noted, the notes below indicate that an individual's parentage is as shown in the above family tree.

^ Sister of Trajan's father: Giacosa (1977), p. 7.
^ Giacosa (1977), p. 8.
^ ^a ^b Levick (2014), p. 161.
^ Husband of Ulpia Marciana: Levick (2014), p. 161.
^ ^a ^b Giacosa (1977), p. 7.
^ ^a ^b ^c DIR contributor (Herbert W. Benario, 2000), "Hadrian".
^ ^a ^b Giacosa (1977), p. 9.
^ Husband of Salonia Matidia: Levick (2014), p. 161.
^ Smith (1870), "Julius Servianus".
^ Suetonius a possible lover of Sabina: One interpretation of HA Hadrianus 11:3
^ Smith (1870), "Hadrian", pp. 319–322.
^ Lover of Hadrian: Lambert (1984), p. 99 and passim; deification: Lamber (1984), pp. 2–5, etc.
^ Julia Balbilla a possible lover of Sabina: A. R. Birley (1997), Hadrian, the Restless Emperor, p. 251, cited in Levick (2014), p. 30, who is sceptical of this suggestion.
^ Husband of Rupilia Faustina: Levick (2014), p. 163.
^ ^a ^b ^c ^d Levick (2014), p. 163.
^ It is uncertain whether Rupilia Faustina was Frugi's daughter by Salonia Matidia or another woman.
^ ^a ^b ^c ^d Levick (2014), p. 162.
^ ^a ^b ^c ^d ^e ^f ^g Levick (2014), p. 164.
^ Wife of M. Annius Verus: Giacosa (1977), p. 10.
^ Wife of M. Annius Libo: Levick (2014), p. 163.
^ ^a ^b ^c ^d ^e Giacosa (1977), p. 10.
^ The epitomator of Cassius Dio (72.22) gives the story that Faustina the Elder promised to marry Avidius Cassius. This is also echoed in HA "Marcus Aurelius" 24.
^ Husband of Ceionia Fabia: Levick (2014), p. 164.
^ ^a ^b ^c Levick (2014), p. 117.

References:

DIR contributors (2000). "De Imperatoribus Romanis: An Online Encyclopedia of Roman Rulers and Their Families". Retrieved 2015-04-14.
Giacosa, Giorgio (1977). Women of the Caesars: Their Lives and Portraits on Coins. Translated by R. Ross Holloway. Milan: Edizioni Arte e Moneta. ISBN 0-8390-0193-2.
Lambert, Royston (1984). Beloved and God: The Story of Hadrian and Antinous. New York: Viking. ISBN 0-670-15708-2.
Levick, Barbara (2014). Faustina I and II: Imperial Women of the Golden Age. Oxford University Press. ISBN 978-0-19-537941-9.
Smith, William, ed. (1870). Dictionary of Greek and Roman Biography and Mythology.