Who were the shepherd and nymph?

It could be that you mean Nymphs and Shepherds, a poem by Thomas Shadwell (1642 - 1692) Nymphs and Shepherds come away/In the groves lets sport and play/For this is Flora's holiday/Sacred to ease and happy love/To dancing to love and to poetry/Your flocks may now securely rove/Whilst you express your jollity/Nymphs and Shepherds, come away