This early introduction to her profession was stamped by circumstances of considerable romantic interest. A rich young gentleman, a scion of one of the best Hamburg families, became passionately enamored of the young cantatrice. After a brief but energetic courtship, he offered her his hand, which Theresa, whose young heart had been touched by his devotion, was not unwilling to accept, but the stumbling-block in the way was that the family of the enamored youth were unwilling that his future wife should remain on the stage. At last it was arranged that Theresa should retire from the stage for a while, the understanding being that, if at the end of nine months her inclination for the stage should remain as strong, she should return to the profession. It was tacitly a choice between marriage and a continuance of her professional ambition. When the probation was over, the young cantatrice again appeared before the footlights, and the unfortunate lover disappeared. The director of opera at Frankfort-on-the-Main, having heard Mlle. Titiens at Hamburg was so pleased that he made her an offer, and in pursuance of this she appeared in Frankfort early in 1850, where she made a most brilliant and decided success. Her reputation was now growing fast, and offers of engagement poured in on her from various European capitals. The director of the Imperial Opera at Vienna traveled to Frankfort especially to hear her, and as her old contract with the Frankfort _impressario_ was on the eve of expiration, and Mlle. Titiens was free to accept a new offer, she gladly availed herself of the chance to accept the opportunity of singing before one of the most brilliant and critical publics of Europe. She made her _debut_ at Vienna in 1856, and was received with the most flattering and cordial approbation. She appeared in the _role_ of _Donna Anna_ ("Don Giovanni"), and at the close of the opera had numerous recalls. Her success was so great that she continued to sing in Vienna for three consecutive seasons, and became the leading favorite of the public. The operas in which she made the most vivid impression were "Norma," "Les Huguenots," "Lucrezia Borgia," "Le Nozze di Figaro," "Fidelio," and "Trovatore"; and her versatility was displayed in the fact that when she was called on, through the illness of another singer, to assume a comic part, she won golden opinions from the public for the sparkle and grace of her style. II. The English manager, Mr. Lumley, had heard of Mlle. Titiens and the sensation she had made in Germany. So he hastened to Vienna, and made the most lavish propositions to the young singer that she should appear in his company before the London public. She was unable to accept his proposition, for her contract in Vienna had yet a year to run; but, after some negotiations, an arrangement was made which permitted Mlle. Titiens to sing in London for three months, with the express understanding that she should not surpass that limit.