What does Septimius mean in Latin?

Septimius, a proper noun, means “a Roman nomen gentile, gens or "family name" famously held by”.

What is the genitive of Septimius?

The genitive singular is Septimiī. Septimius is masculine, second declension.

In classical Latin, [sɛpˈtɪ.mi.ʊs]; in ecclesiastical (church) Latin, [sepˈtiː.mi.us].

proper noun · masculinesecond declension

Septimius m sg (genitive Septimiī or Septimī)

Classical[sɛpˈtɪ.mi.ʊs]Ecclesiastical[sepˈtiː.mi.us]

Septĭmĭus, i, m.; Septĭmĭa, ae, f.,

I. the name of a Roman gens.

1. C. Septimius, an augur, Cic. Att. 12, 13, 2; 12, 14, 1.—

3. Porcius Septimius, Tac. H. 3, 5.—

4. Titius Septimius, a poet and friend of Horace, Hor. Ep. 1, 9, 1 (to him was addressed C. 2, 6).—

5. Septimius Severus, a Roman emperor, Spart. Sev.; Eutr. 8, 10.—Fem.: Septimia, perh. the wife of Sicca, Cic. Att. 16, 11, 1.

From Proto-Italic *Septəmos. Internally, from septimus (“seventh”) + -ius.

Descendants