Where does “Didus” come from?

Didus (Latin) comes from Portuguese doudo, from Latin doctus, from Latin doceō, from Proto-Italic dokeō, from Proto-Indo-European deḱ- — take; perceive.

Ancestry of “Didus”, step by step

Didus traces back through two separate lines of ancestry.

via Portuguese doudo

Step	Language	Word	Meaning
1	Portuguese	doudo	Obsolete form of doido
2	Latin	doctus	having been taught, instructed, trained; having...
3	Latin	doceō	to inform
4	Proto-Italic	dokeō	tell, inform; teach, instruct
5	Proto-Indo-European	deḱ-	take; perceive

via Ancient Greek Δῑδοῦς

Step	Language	Word	Meaning
1	Ancient Greek	Δῑδοῦς	—

Every word from Proto-Indo-European deḱ- →Every word from Proto-Italic dokeō →Every word from Latin doceō →