Errol
“The nobleman,” from the Middle English erl, a count, nobleman, etc.
Ernestine
“Having firmness of purpose,” from the Anglo-Saxon eornost, earnestness, determination. Regarded as the feminine form of Ernest.
Ernest
“The resolute fighter,” from the Anglo-Saxon eornost, determination, resolute ness.
Ernesta
“Characterized by firm purpose,” from the Anglo-Saxon eornost, earnestness.