Meliboea was one of Niobe and Amphion 's fourteen children ( the Niobids ) , and the only one ( or one of two ) spared when Artemis and Apollo killed the Niobids in retribution for Niobe 's insult to their mother Leto , bragging that she had many children and Leto had only two .
Meliboea was one of Niobe and Amphion 's fourteen children , and the only one not killed when Artemis and Apollo killed the children as revenge .