Fair, white, or smooth
Yenny is a diminutive form of Jennifer, which itself is the Cornish version of the Welsh name Gwenhwyfar. It shares the same etymological roots as Guinevere, signifying purity or fairness. While often used as a nickname, it has gained some independent use in Spanish-speaking communities.
Less common today
Yenny isn't in the latest US Top 1000. It last peaked at #6,955 in 1992.
Chilean professional footballer
Indonesian activist and politician
US births per 5-year period, 1990βpresent (SSA data).