Name The municipality (originally the parish) is named after the old
Vestby farm (
Old Norse:
Vestbýr), since the first church was built here. The first element is
vestr which means "west" and the last element is
býr meaning "farm". The neighbouring farms have the names
Østby ("eastern farm"),
Sunnby ("southern farm"), and
Nordby ("northern farm"); and they must all four be the parts of a bigger and older farm, whose name is now unknown.
Coat-of-arms The
coat-of-arms is from modern times. They were granted on 18 June 1982 and designed by Bjørn Linnestad. The arms show three gold
bottony crosses on a red background, two over one. They represent the three original parishes in the municipality: Vestby,
Garder, and
Såner. At the same time they also represent the three natural
harbors in the area: Emmerstad, Kjøvangen, and Sonskilen. ==History==