Contubernium in Roman law was a permanent and legally permissible relationship between slaves or a free person and a slave. Contubernium was a purely factual relationship with no legal effect. Children from this relationship became the property of the owner of a slave.
Sources
A. Dębiński, Rzymskie prawo prywatne. Kompendium, Warszawa 2008
Support IMPERIUM ROMANUM!
If you like the content that I collect on the website and that I share on social media channels I will be grateful for supporting me.