How did Aeolidiella drusilla get its name

Dear Drusilla,
Obviously you have a personal interest in asking your question. Unfortunately many earlier scientists gave species their names without telling us why. Rudolph Bergh's description of this species is a case in point. Often species were named after classical Greek and Roman gods and goddesses and historical figures. At a guess this species was probably named after the influential wife of the Roman Emperor Augustus - Livia Drusilla.
Cheers,
Bill Rudman