How about naming them after the muses?
I always liked "Calliope", the muse of epic poetry.
They are as follows:
* Calliope (Chief of the muses and muse of epic poetry)
* Euterpe (music/lyric poetry)
* Clio (history and historical/heroic poetry)
* Erato (lyrics/love poetry)
* Melpomene (tragedy)
* Polyhymnia (hymns and sacred poetry)
* Terpsichore (dance and choral song)
* Thalia (comedy)
* Urania (astronomy)
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