Pleiades
The Pleiades (Πλειάδες) were the seven daughters of Atlas and the Oceanid Pleïone (Pleione). However, Hyginus says in the Fabulae that Atlas and Pleïone originally had twelve daughters and a son named Hyas, and five of their daughters died grieving for their brother, killed by either a lion or a wild boar (see Hyades).
They didn't seem to have any special roles as nymphs, except who they mated with and who their children were. Each one of the Pleiades was wooed by a god, giant or mortal. The giant hunter Orion tried to capture and ravish them all. See Orion and the Pleiades, and Orion in Giants, about their connection with the hunter.
By Jimmy Joe