男性名字，源自拉丁語，來自 Octavius，意爲“第八”，源自 octavus，意爲“第八”，源自 octo（參見 eight）。
But although we find so marked differences in the use of the numerals as names, it is impossible to believe that this use did not arise in the same way for all; that is, that they were at first used to distinguish children by the order of birth. But when we find them as praenomina in historical times it is evident that they no longer referred to order of birth. [George Davis Chase, "The Origin of Roman Praenomina," in Harvard Studies in Classical Philology, 1897]
但是，儘管我們發現在使用數字作爲名稱方面存在明顯的差異，但不可能不相信這種用法不是以相同的方式出現的; 也就是說，它們最初是用來通過出生順序區分兒童的。但是，當我們在歷史時期發現它們作爲 praenomina 時，很明顯它們不再指代出生順序。[喬治·戴維斯·蔡斯，《哈佛古典哲學研究》（1897）]
