Where does “Lukic” come from?

Lukic (English) comes from Serbo-Croatian Lukić, from Serbo-Croatian Luka, from Ancient Greek Λουκᾶς, from Latin Lucius, from Latin lux, from Proto-Italic louks, from Proto-Indo-European lewḱ-, from Proto-Indo-European lewk- — bright; to shine; to see.

Ancestry of “Lukic”, step by step

Step	Language	Word	Meaning
1	Serbo-Croatian	Lukić	—
2	Serbo-Croatian	Luka	harbor; harbour
3	Ancient Greek	Λουκᾶς	man from Lucania
4	Latin	Lucius	a fish, probably the pike
5	Latin	lux	light; daylight, day, moonlight; life
6	Proto-Italic	louks	light
7	Proto-Indo-European	lewḱ-	lynx
8	Proto-Indo-European	lewk-	bright; to shine; to see

Every word from Proto-Indo-European lewk- →Every word from Proto-Indo-European lewḱ- →Every word from Proto-Italic louks →