This is an oddly naive sort of question coming from you, Thews. One might have expected it in somebody’s post no. 1. The answer’s only a click away. Wikipedia says the name means “nobility of faith”. The site listed below says the same. How close “nobility of faith” is to “valor” you must judge for yourself. Why, I wonder, did you ask? Are you indeed a troll, as someone has already suggested? Or perhaps under the affluence of inkohol? (Now that i can understand and sympathize with ;-)
True, but it’s worth noting that ‘alā’ is derived from the root ‘alā ‘to be high; to rise’ (also the root of ‘alā ‘on, above’ and ‘aliy ‘high, elevated, exalted; Most High; (the name) Ali’) and its literal meaning is ‘high rank/standing,’ for which nobility is a perfectly good synonym.
Edit: You can see English words derived from the Semitic root (all from Hebrew or Akkadian, as it happens) at the AHD entry.