Oliver traces to the Latin oliva, the olive tree long used as a symbol of peace, and the name is commonly associated with steady, patient growth rather than rapid change. It's often read as carrying calm resilience -- the kind of peace that comes from roots established over time, not a fleeting truce.
The vertue of a Planet is in that House, whose beginning or cusp a Planet precedes by no greater space than five degrees. - William Lilly (1602.-1681.)