The name is a modern feminization of the now unisex name Aubrey (please refer to Aubrey).
As a given name, it first sporadically appeared in the U.S. starting in the late 1990s. It entered the U.S. Top 1000 in 2014 and currently ranks in at #930 (2022).
From a Southern English dialectal form of Old English fenn (fen, marsh), this was a surname that was later transferred as a male first name. Earliest record of this name I could find is for a Vans Bartlett, christened 1611 of Devon, England, followed by a Vance Sullivan, christened 1681 of Herefordshire, England.
It first appeared in the U.S. Top 1000 male names in 1880, it peaked at #328 in 1969 and currently stands as the 976th most popular male name (2022).
Notable bearers include pulitzer prize winning journalist, Vance Trimble (1913-2021) and Australian singer and songwriter, Vance Joy.