Youthful or downy-bearded
Jilliana is an 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 youthfulness or the soft down of a young man's beard.
Fewer than 5 girls were named Jilliana in 2025.
US births per 5-year period, 1990–present (SSA data).
