Agnes Mathilde Wesendonck (1828 – 1902) was a German poet and author. The words of five of her verses were the basis of her friend Richard Wagner’s Wesendonck Lieder. He may have been her paramour. Wikipedia
Wesendonck, Mathilde (1828–1902)

Agnes Mathilde Wesendonck (1828 – 1902) was a German poet and author. The words of five of her verses were the basis of her friend Richard Wagner’s Wesendonck Lieder. He may have been her paramour. Wikipedia