Luca in Romanian is a masculine name though, related to English "
Luke".
It's one of the VERY few first names in Romanian that end in -a. The only others that I can think of are "Mihnea", "
Mircea", "Manea" (out of use or only in use in surnames), "Voinea" (likewise).
I SERIOUSLY doubt it's connected at all.
The Romanian masculine of
Lucius is "
Lucian", which is a masculinized form of the name "
Lucia", whose origins I explained in my previous message. Not
Luca.
Luca is originally Greek.