Lily flower
A modern elaboration of Lillian, which itself is a diminutive of Elizabeth or derived directly from the lily flower. It combines the classic floral association with a double-n ending for a unique visual flair. The name symbolizes purity and innocence, long associated with the lily in various cultures.
Less common today
Lilliann isn't in the latest US Top 1000. It last peaked at #2,518 in 2009.
US births per 5-year period, 1990βpresent (SSA data).