Where does “Irvine” come from?

Irvine (English) comes from Welsh ir, from Proto-Brythonic ir — fresh, new.

Ancestry of “Irvine”, step by step

Step	Language	Word	Meaning
1	Welsh	ir	raw, unprocessed; fresh, succulent
2	Proto-Brythonic	ir	fresh, new

Irvine — Etymology, Origin & Word History | Etymology Explorer