Where does “Ρίο ντε Τζανέιρο” come from?

Ρίο ντε Τζανέιρο (Greek) comes from Portuguese Rio de Janeiro — River of January.

Ancestry of “Ρίο ντε Τζανέιρο”, step by step

StepLanguageWordMeaning
1PortugueseRio de JaneiroRiver of January
Every word from Portuguese Rio de Janeiro