 Complete the following phrase:  On an occasion, his mother came back to Vienna. He gave vent to his feelings, and he sought help her to hope to put in a good word on behalf of him with his father. However, because she had severed all relations with the Royal court, she rejected the entreaty of her son stubbornly. Because Rudolf despaired of her behavior, he accepted the kiss of the Grim Reaper Death at Mayerling on the outskirts of Vienna in January 1889 and committed double suicide with a pistol. This is so-called the 