[Symbiote]

Quintus, Sextus, Septimus, Octavius and Decimus — Roman names for fifth...eighth, tenth son.

Prima, Secunda, Tertia, Quarta, Quinta, Sexta, Septima, Octavia, and Decima — first to tenth daughter.

Octavia survived into modern English: https://en.wikipedia.org/wiki/Octavia_Spencer , https://en.wikipedia.org/wiki/Octavia_E._Butler

[emmelaich]

Balinese use birth order in their names. There are a lot of Wayans.

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