Evelyn's history is layered, moving from a Norman surname into a given name, and it's often associated with the idea of a long-desired or wished-for child. That association gives the name a gentle, hopeful undertone -- less about destiny and more about being welcomed. Its meaning has shifted across centuries of use.
Saturn is under the Sun beams until he be 15 degrees distant from him. Understand the same of Jupiter. - William Lilly (1602.-1681.)