Frances Jane van Alstyne (née Crosby; March 24, 1820 – February 12, 1915), more commonly known as Fanny Crosby, was an American mission worker, poet, lyricist, and composer. She was a prolific hymnist, writing more than 8,000 hymns and gospel songs, with more than 100 million copies printed. She is also known for her teaching and her rescue mission work. By the end of the 19th century, she was a household name.