It is descended from Old English wé, which was pronounced something like way in modern English. It is related to German wir, Dutch wij, Frisian wy, and Danish vi.
See also:
... disease[?] Andre syndrome[?] Androgen insensitivity syndrome (AIS) Anemia sideroblastic spinocerebellar ataxia[?] Anemia, Diamond-Blackfan[?] Anemia, ...