valley: [13] Valley comes via Anglo-Norman valey from *vallāta, a Vulgar Latin derivative of Latin vallis ‘valley’, whose origins are uncertain. A more direct English descendant of vallis is vale [13]. => vale[valley etymology, valley origin, 英语词源]
c. 1300, from Anglo-French valey, Old French valee "a valley" (12c.), from Vulgar Latin *vallata, from Latin vallis "valley," of unknown origin. Valley Girl (in reference to San Fernando Valley of California) was popularized 1982 in song by Frank Zappa and his daughter. Valley of Death (Psalm xxiii:4) was rendered in Middle English as Helldale (mid-13c.).