Youthful or child of Jove
A modern elaborated form of Jillian, which is the English feminine version of Julian. It ultimately derives from the Roman family name Julius, which is often associated with the Roman god Jupiter.
Less common today
Jillianne isn't in the latest US Top 1000. It last peaked at #5,090 in 2000.
US births per 5-year period, 1990–present (SSA data).
