Benjamin comes from Hebrew and is traditionally rendered "son of the right hand," an idiom historically tied to favor, strength, or a place of honor within a family. The biblical Benjamin was the youngest and most cherished of his brothers, and the name has kept that undertone of being treasured rather than merely counted among many.
Three manner of wayes the Planets are varied or changed, by reason of their first qualities, of their Houses, and significations. - William Lilly (1602.-1681.)