Greek mythology. I'm doing three girls and two boys, because I have too many awesome girl names.
Penelope Helen Artemis "Pepsi"
Persephone Hera Athena "
Pippa"
Cassandra Iris Iphegenia "
Cassie"
Perseus Lykos Leandrus "
Percy"
Hermes Adonis Alexander "
Hermes"
Pippa and Pepsi would be twins :).