Where does “Kevin” come from?

Kevin (Portuguese) comes from English Kevin, from Irish Caoimhghin, from Old Irish Cóemgen, from Old Irish cóem, from Proto-Celtic koimos, from Proto-Indo-European ḱóymos, from Proto-Indo-European ḱey- — to be lying down; to settle.

Ancestry of “Kevin”, step by step

Step	Language	Word	Meaning
1	English	Kevin	A working-class male
2	Irish	Caoimhghin	—
3	Old Irish	Cóemgen	—
4	Old Irish	cóem	dear, gentle, beloved
5	Proto-Celtic	koimos	dear, nice
6	Proto-Indo-European	ḱóymos	of the home, belonging to the family; village,...
7	Proto-Indo-European	ḱey-	to be lying down; to settle

Every word from Proto-Indo-European ḱey- →Every word from Proto-Indo-European ḱóymos →Every word from Proto-Celtic koimos →