The paper searches and analyzes the image of Iseult Gonne in some of Yeats's poems. It is not difficult to locate Iseut's images in most of the poems that contain her image, except the poem, "Long-legged Fly." In this poem the young girl at puberty practicing a tinker shuffle picked up on a street is said to be Maud Gonne, as definitely noted by Jeffares. But this paper claims that she is Iseult Gonne on the basis of Yeats's recording what he has witnessed, the young girl barefoot dancing and singing, thinking that nobody is looking at the edge of the water and sand at Normandy. And one of the important poems that immortalizes Iseult is "To a Child Dancing in the Wind," singing what's permanent in the present Iseult, against the passing of life and time. This concern deeply permeates most of Yeats's Iseult poems, as one of them being "Two Years Later" and another is a poem, "Why Should Not Old Men Be Mad?" (written in 1936, three years before he died in 1939) in which the poet calls Iseult's husband a dunce, because Yeats loves and pities Iseult so much. To Yeats and in his poems, Iseult Gonne symbolizes eternal beauty or something that should remain for good. Not only that, but also the most beautiful and strongest of Iseult Gonne poems is "Owen Aherne and his Dancers" written immediately after Yeats's marriage to Georgie, with two sections, once the first being called "The Lover Speaks" and the second "The Heart Replies." As the image of dance indicates, it is about Iseult Gonne, with Yeats in disguise. It signals a new beginning for Yeats in relation to his poetry and to his life-long love Iseult.