Lady Gregory is best known as a central figure of the Irish Literary Movement and the founder of the Abbey Theatre along with W. B. Yeats, John Millington Synge, George Moore, and Sean O’Casey. Her secondary contribution to the Irish Literature must be that she had discovered Yeat’s genius when nobody paid serious attention and supported him with every possible environments so that Yeats could cultivate and exert his genius without wasting his genius in other tribial matters. It is a wonder that Lady Gregory herself was a playwright and she had produced 35 plays in her lifetime. As is generally known to the public, her genius was overshadowed by a far greater poet and playwrights Yeats. Of course, she had no idea and desire to be a playwright, but her writing was initiated by collaborating with Yeats. In “The Rising of the Moon”, ‘Man’ persuades the sergeant who were originally to seize the Man to be helping his escape through reminding the days when all the Irish people were under Granuille’s leadership. At last the sergeant even betrays fellow policeman X and B and become co-criminal by strongly ordering them to go away from him. The “Man” who might be a wandering poet consistently reminds the sergeant of the good old days when all Irish people were single-minded holding the same ideal-to be perfectly free from British rule. In “The Shadow of the Glen”, Nora leaves home following a stranger, Tramp. Literally, she was expelled by her husband, Dan but, frankly speaking, she actively leaves home for a new and better life. Here Dan represents an old and stubborn British rule while “to search for a new life following Tramp represents a new Ireland, a free and hopeful Ireland.” Nora has the same name with Nora in Henrick Ibsen’s “Doll’s House”. Like Nora of “Doll’s House”, Nora in “In the Shadow of Glen”, ventures her life for the sake of an independent, free, and hopeful life. In “Cathleen Ni Hoolihan”, Michael is rushes out of the house to join the French to fight against the British army following the voice calling outside. Peter, Bridget, Patrick & Delia could not hear the old woman’s voice while Michael clearly hears her & bolts out as if led by ghost not hearing Delia's appeal to wait for their marriage. In Michael’s eye, the old woman looked like a queen and Michael followed her as if the Queen’s people follow the queen quite naturally. Lady Gregory has been often referred to as ‘a queen’ in that she had a strong leadership like a queen and she had a special power to make people succumb to her will.In Gregory’s plays it is often represented that she consciously stirs patriotism in people’s mind. And especially in three of her plays, “The Rising of the Moon”, “In the Shadow of the Glen”, and “Cathleen Ni Hoolihan”, it is so transparent that Lady Gregory intentionally drives the reader to wake their patriotism up and continue to fight against British rule by helping the man to escape, by giving Nora courage to follow Tramp, and by making Michael to join the French following the voice of an old woman leaving his bride-to-be Delia. In most cases, It seems to be nothing but patriotism that drives Gregory to write plays. In this sense, Gregory could be labelled as an political or an activist writer.