Where does “Columbán” come from?

Columbán (Old Irish) comes from Old Irish columb, from Latin columba, from Ancient Greek κόλυμβος, from Ancient Greek κολυμβάω — to dive, plunge; dive, plunge headlong, swim; I...

Ancestry of “Columbán”, step by step

Columbán traces back through two separate lines of ancestry.

via Old Irish columb

Step	Language	Word	Meaning
1	Old Irish	columb	dove
2	Latin	columba	dove, pigeon; a term of endearment
3	Ancient Greek	κόλυμβος	Alternative form of κολυμβῐ́ς; Alternative form...
4	Ancient Greek	κολυμβάω	to dive, plunge; dive, plunge headlong, swim; I...

via Old Irish án

Step	Language	Word	Meaning
1	Old Irish	án	verbal noun of aigid
2	Old Irish	air	for

Every word from Ancient Greek κολυμβάω →Every word from Ancient Greek κόλυμβος →Every word from Latin columba →