Answer:
Maud Gonne
Step-by-step explanation:
William Butler Yeats proposed to Maud Gonne four times and on each occasion, was rejected by him. He proposed in the years; 1891, 1899, 1900, and 1901. Gonne was a young Irish nationalist/activist and part of the reason why she rejected Yeats was that he did not support her course. Moreso, she later became Catholic while Yeats remained protestant.
Even though they later consummated their relationship after Maud Gonne's marriage with Major John Macbride failed, Gonne was still unable to develop sufficient love that could lead to marriage with Yeats.