Where does “Vance” come from?

I need to point out that there's a problem with this request. The etymological chain provided (Old English fenn → Proto-Germanic fanją → Proto-Indo-European pen-) traces the word "fenn" (meaning wetland/marsh), but the headword is "Vance," which is a proper name. These are unrelated. "Vance" as a surname has a different origin (typically from a place name or personal name in Middle English), not from the "fenn" chain provided. I cannot write an accurate etymology sentence connecting "Vance" to this chain, as doing so would violate the accuracy requirement in your rules. Could you clarify: Did you mean the headword should be "fenn" or "fen"? Or is there a different etymological chain for "Vance"?

Ancestry of “Vance”, step by step

Step	Language	Word	Meaning
1	French	avancer	to advance, to go forward; to progress; to bring...
2	Middle French	advancer	to advance
3	Old French	avancier	to advance; to move forward; to advance; to...
4	Vulgar Latin	abanteare	present active infinitive of *abanteō;...
5	Latin	ab ante	—
6	Latin	ante	before, in front, forwards; before; before,...
7	Ancient Greek	κλίσις	bending, inclination; a lying down; a place for...
8	Ancient Greek	-σῐς	"suffix forming nouns"
9	Ancient Greek	-τις	Earlier form of -σις , retained after dentals δ,...
10	Proto-Indo-European	-tis	Derives abstract/action nouns from verb roots

Words derived from “Vance”

Every word from Proto-Indo-European -tis →