Does alb mean white, in some language?

As in the poetic name Albion, meaning England.
I believe this name traces from the War of the Roses (whites and reds); can anyone confirm?
Shakespeare:
From worthy Edward, King of Albion (King Henry VI, Part iii Act 3, Scene 3)
In that nook-shotten isle of Albion, (King Henry V Act 3, Scene 5)
Then shall the realm of Albion / Come to great confusion (King Lear, Act 3, Scene 2)