Jenny

Jenny originated as a medieval English pet form of Jane, itself derived from the Old French Jehanne, a feminine form of the Latin Iohannes, which traces back to the Hebrew name Yohanan meaning God is gracious. From the 18th century onward it also came to be used as a diminutive of Jennifer, a Cornish form of Guinevere. The name was widely popularized in the English-speaking world by the celebrated Swedish opera singer Jenny Lind, known as the Swedish Nightingale, in the 19th century. Related forms include Jennie, Jane, Jennifer, and the Icelandic variant Jenný.