Eveline Guerra was a pirate who raided ships returning from treasure-hunting expeditions. Her tactic was to wait until the crew had returned, tired and weak, only for them to be met by Eveline's band of loyal followers. It was a very effective strategy, and much of the loot she took was used to fund Templar operations.
Eveline, a diminutive form favored by the English, the Dutch and the French of the name Avila, itself from Germanic element avi, the meaning of which is uncertain, but thought to be "desired." Guerra is a word for "war" in Portuguese, Spanish and Italian.