Melian comes from Greek roots and may relate to honey, sweetness, or the ash tree in classical usage.
R. Tolkien's legendarium, giving it an unusually rich dual heritage. In Greek, the element "meli" (μέλι) means honey, and related forms like Meliades referred to the ash-tree nymphs of classical mythology — nature spirits associated with sweetness, nourishment, and the living world.
There is also a connection to the name Melissa, the bee-keeper nymph of Crete said to have nursed the infant Zeus with honey. Tolkien transformed and elevated the name in his mythology of Middle-earth. His Melian is one of the Maiar — a divine being of immense power and wisdom — who chose to dwell in the mortal world out of love for the Elven king Thingol.
Together they founded the hidden kingdom of Doriath and surrounded it with the Girdle of Melian, an enchanted boundary that protected their realm for centuries. In Tolkien's cosmology, Melian is the ancestor of Lúthien Tinúviel, who is in turn the ancestor of Elrond and Arwen, making her the grandmother of perhaps the most celebrated lineage in Middle-earth. Among Tolkien enthusiasts, Melian carries the weight of that mythic grandeur.
For those without that reference, it reads as a lyrical, uncommon name with a honey-soft sound and classical resonance. Its three syllables fall with an easy grace, and it has gained quiet admirers in literary naming communities who prize depth and originality over chart position.