There are multiple origins and meanings for the name Evangeline:
1. Latin name, derived from the ancient Greek word (εὐαγγέλιον) [evangelion] etymology (definition) - "good (Eu) news; glad tidings (reward for); gospel".
Gospel is an account, often written, that describes the life of Jesus of Nazareth. In a more general sense the term "gospel" may refer to the good news message of the New Testament. It is primarily used in reference to the four canonical gospels of Matthew, Mark, Luke, and John. However, the term is also used to refer to the Apocryphal gospels, the Non-canonical gospels, the Jewish gospels and the Gnostic gospels.
2. Combination of the proper nouns Eve + Angel.