What does Tarquinius mean in Latin?

Tarquinius, a adjective, means “of or belonging to Tarquinii, Tarquinian; of or belonging to the family of the Tarquins, Tarquinian”.

How do you pronounce Tarquinius?

In classical Latin, [tarˈkʷɪ.ni.ʊs]; in ecclesiastical (church) Latin, [tarˈkʷiː.ni.us].

adjectivefirst/second-declension adjective

Tarquinius (feminine Tarquinia, neuter Tarquinium)

Classical[tarˈkʷɪ.ni.ʊs]Ecclesiastical[tarˈkʷiː.ni.us]

singular
form	masculine	feminine	neuter
nominative	Tarquinius	Tarquinia	Tarquinium
genitive	Tarquiniī	Tarquiniae	Tarquiniī
dative	Tarquiniō	Tarquiniae	Tarquiniō
accusative	Tarquinium	Tarquiniam	Tarquinium
ablative	Tarquiniō	Tarquiniā	Tarquiniō
vocative	Tarquinie	Tarquinia	Tarquinium

plural
form	masculine	feminine	neuter
nominative	Tarquiniī	Tarquiniae	Tarquinia
genitive	Tarquiniōrum	Tarquiniārum	Tarquiniōrum
dative	Tarquiniīs	Tarquiniīs	Tarquiniīs
accusative	Tarquiniōs	Tarquiniās	Tarquinia
ablative	Tarquiniīs	Tarquiniīs	Tarquiniīs
vocative	Tarquiniī	Tarquiniae	Tarquinia

From Etruscan Tarchuna, Tarchna (“Tarquinii”). Further etymology is unknown.

proper noun · masculinesecond declension

Tarquinius²

Tarquinius m sg (genitive Tarquiniī or Tarquinī)

Classical[tarˈkʷɪ.ni.ʊs]Ecclesiastical[tarˈkʷiː.ni.us]

masculinesingularTarquin; a Roman nomen gentile, gens or "family name" famously held by
masculinesingularLucius Tarquinius Superbus, the seventh and final king of Rome

From Etruscan Tarchuna, Tarchna (“Tarquinii”). Further etymology is unknown.

What does Tarquinius mean in Latin?: Tarquinius, a adjective, means “of or belonging to Tarquinii, Tarquinian; of or belonging to the family of the Tarquins, Tarquinian”.
How do you pronounce Tarquinius?: In classical Latin, [tarˈkʷɪ.ni.ʊs]; in ecclesiastical (church) Latin, [tarˈkʷiː.ni.us].