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.
If the objective is in the nature of the ruler the acquisition will be easier, and vice versa. - Picatrix (Andalusia, ~1000.AD)