Four sisters (people)

Four sisters named Flora, Viva, Aqua and Terra once lived on a small island, where they sung a beautiful song together to keep a great beast dwelling beneath the isle at its centre asleep.

Deltora Quest 3

 * The Sister of the South

Other

 * Tales of Deltora (tale repeated from The Sister of the South)

Trivia

 * Flora, Viva, Aqua and Terra respectively mean "Flowers" or "Spring", "Being alive", "Water" and "Earth" in Latin.