Meaning and name origin
Ernesta \e-rnes-ta, er-ne-sta\ as a girl's name is of Old German origin, and the meaning of Ernesta is "serious; battle to the death". Ernesta is a variant of Ernestine (Old German): elaborated feminine form of Ernest, created in the 19th century. See also Erna and Nesta.
Ernesta is not a popular first name for females and an equally uncommon surname or last name for all people (2000 U.S. Census).