Variant of Lillian combined with Anne, from Latin 'lilium' meaning lily.
Lillianne is an elaborated, doubly-layered form of Lillian, which itself derives from the Latin lilium and Greek leirion, both meaning lily. The lily has been among the most symbolically loaded flowers in human history — in ancient Greece it was associated with Hera and with rebirth, in Christian iconography with the Virgin Mary and purity, and in secular Western culture with elegance and refinement. The name Lily entered English use in the 16th century as both a floral name and a pet form of Elizabeth, giving it dual roots.
Lillian emerged as a more formal variant in the 18th and 19th centuries, reaching peak popularity in the late Victorian and Edwardian eras, when floral and botanical names were in high fashion. The extended Lillianne, with its doubled consonant and the -anne suffix, represents a 19th-century French-inflected elaboration — a practice of ornamentation that was fashionable among families seeking names with a certain grandeur or Continental elegance. The -anne ending also nods to Anne, a name of Hebrew origin meaning grace, so Lillianne quietly fuses lily-purity with grace in a single word.
As a given name today, Lillianne occupies the same nostalgic revival space as Genevieve, Josephine, and Rosalind — names that feel antique without being archaic, ornate without being fussy. The double-L construction gives it a visual flourish that sets it apart from the simpler Lillian. For parents drawn to long, elaborate names that can be nicknamed down to Lily, Lillie, or Annie, Lillianne offers maximum flexibility wrapped in a genuinely beautiful form.