''The Countess Cathleen'' is written by -

The Countess Cathleen, verse drama by William Butler Yeats, published in 1892 and performed in 1899.
Like many of Yeats’s plays, The Countess Cathleen was inspired by Irish folklore.
In a time of famine, demons sent by Satan come to Ireland to buy the souls of the starving people. The saintly Cathleen disposes of her vast estates and wealth in order to feed the peasants, yet the demons thwart her at every turn; at last, she sacrifices her own soul to save those of the poor.
Source: Britannica.com