Foster is an English given name derived from Vaast, the Flemish, Norman, and Picard form of Vedastus, the Latinized name of a 6th-century Christian saint known for converting the Frankish king Clovis to Christianity. The name Vedastus itself likely originates from a Germanic or Celtic source, possibly the Old Germanic name Widogast, composed of the elements witu ("wood") and gast ("guest, stranger"). Etymology The etymological chain traces back to Widogast, an Old High German name that combines "wood" and "stranger", possibly referring to a "stranger from the woods" or "forest guest". From Widogast, the Latinized form Vedastus emerged, which then evolved into Flemish and Picard Vaast. In the English context, Vaast was reinterpreted as Foster, a form influenced by the Anglo-Norman pronunciation and perhaps by the familiar English surname Foster. Cultural Significance Saint Vedastus (or Vaast) was a bishop of Arras in the 6th century and played a key role in the Christianization of the Franks. The name Foster thus carries indirect ties to early medieval church history and Frankish power. In English usage, Foster is rare as a given name but more common as a surname. The transfer from Vaast to Foster likely occurred in Norman England, following the Norman Conquest, where both the name and cult of Saint Vaast spread. Notable Bearers Notable individuals named Foster include Foster Furcolo, an American politician; Foster Stockwell, an Australian children's author; and Foster Hewitt, a Canadian sports broadcaster. None are directly linked to the saint, but they reflect the name's modest but consistent use as a first name. Meaning: "wood guest" (ultimately from Germanic elements) Origin: Germanic via Latin, Flemish, English Type: Given name (also surname) Usage regions: English-speaking world