Principles of elvish nomenclature
Elvish names respect specific phonetic patterns: open and fluid vowels (ae, ia, ëa), soft consonants (l, r, n, th), and melodic structure that allows sung pronunciation. 'Legolas', 'Galadriel', 'Elrond' share this musicality. Avoid consecutive hard consonants (kr, zk, gn) that break characteristic sonority.
Elvish surnames are rarely hereditary like in humans. Instead, they combine natural element + descriptor: 'Moonshadow', 'Silverbrook', 'Starweaver'. This structure reflects elvish connection with nature and cosmos. An elf might change their surname upon coming of age (100 years) to reflect achievements or vocation.
Gender in elvish names: generally endings in -iel, -wen, -eth mark feminine; -ion, -or, -dir mark masculine. But there are deliberate exceptions in elvish traditions that value ambiguity as art form. 'Thalion' can be valid non-binary name depending on setting.
Variations by elvish subraces
High Elves: three-syllable names, astral and luminous references. 'Aerendyl Moonshadow' exemplifies the ideal: first name with complex diphthong, surname evoking illuminated night. These elves value academic tradition; historical names are recycled with pride (Finwë, Fëanor in Tolkienian tradition).
Wood Elves: more earthly names, two syllables in common first name. 'Cyran Leafwhisper' connects with flora. Surnames reference specific trees (Oakenshield, Birchwood, Willowsong) or forest activities (Wildrunner, Branchwalker). Less ornamentation than high elves, more pragmatism.
Drow (Dark Elves): harsher phonetic structure in comparison: apostrophes (Zaknafein, Jarlaxle), explosive consonants. Drow matriarchy reflects in noble house names carried by eldest daughters. 'Do'Urden', 'Baenre', 'Oblodra' are power surnames. Male drow names frequently include sibilant sounds.
Sea Elves: obvious but effective aquatic nomenclature. 'Thalassia Waveborn' uses Greek root (thalassa = sea) common in this lineage. Prefixes like Nere- (water), Triton- (currents), Calypso- (depth) establish immediate submarine identity.
Elvish names in worldbuilding
If you're creating naming system for your own fantasy world, define first the phonetic rules of your elvish language. Tolkien spent decades developing Quenya and Sindarin with complete grammar; you don't need that level, but basic consistency yes. Choose 10-15 allowed sounds, build table of valid combinations, respect it.
Elvish place names follow similar structure: descriptive prefix + geographic suffix. 'Rivendell' (Cloven Valley), 'Lothlórien' (Dreamflower). For your world: create 5-10 standard suffixes (-dor = land, -wyn = river, -thil = forest), recycle with different prefixes. 'Arandor' (Noble-Land), 'Silvwyn' (Silver-River), 'Galenthil' (Green-Forest).
Elvish honorific titles: instead of 'Lord' or 'Lady', consider elvish variations. 'Edhel' (elf), 'Aran' (king), 'Tári' (queen), 'Hîr' (master). 'Edhel Aerendyl' sounds more authentic than 'Lord Aerendyl' if you want to maintain complete linguistic immersion. This for hardcore settings; in casual D&D 'Lord' is perfectly acceptable.
Narrative use of elvish names
In narrative, long elvish names must be introduced gradually. First mention: full name to establish tone. 'Legolas Greenleaf drew his bow'. Subsequent: first name only. 'Legolas nodded'. Elvish surnames are reserved for formal moments or when there's ambiguity between characters with similar names.
Elvish nicknames are valid for emotional connection. 'Strider' for Aragorn, 'Oakenheart' for veteran elvish druid. These nicknames are usually given by others; rare for an elf to self-name thus due to cultural modesty. Exception: adventuring elves adopting simple alias to deal with non-elves ('Zephyr' instead of 'Zephyranthes Starcaller').
True names vs. common names: in some settings, elves guard their birth name in secret, using abbreviated version publicly. Knowing an elf's true name implies deep trust or gives magical power over them (see True Name mechanics in D&D). 'Thalion' might be short form of 'Thalionwë Moonshadow Starweaver', reserved for rituals.