Good job, Hooter, but I can add some...
Weizen is German for "wheat".
Weiss, also seen as Weiß, is German for "white".
Weißbier (German) means "white beer".
Wit is Belgium for "white".
They were so named because they looked "relatively" white compared to the dark (colored) brews throughout Europe.
A pilsner (like our Bud) did not come into being until 1842 in Plzn/Plzen, in Bohemia (Czech Republic) when a malter's fire went out (overnight) and the grains weren't roasted come morning. Apparently, the brewer wanted/needed to brew that day and took the grain anyway. He brewed up a batch with lightly roasted grains and ...viola!...the rest is beer history...light colored beer...