-wë a suffix occurring in many personal names, generally but not exclusively masculine (Elenwë is the sole certain example of a fem. name with this ending); it is derived from a stem simply meaning "person" (PM:340, WJ:399). In Etym, -wë is simply defined as an element that is frequent in masculine names, and it is there derived from a stem (WEG) having to do with "(manly) vigour".
-wësuffix. name-suffix (often masculine)
Finwë masc. name, apparently displaying the frequent ending -wë suffixed to a stem normally having to do with hair, but the name is obscure (see Tolkien's discussion in PM:340-341). Also in Etym (PHIN, WEG). According to VT46:9, Finwë was also the name of tengwa #10 in the pre-classical Tengwar system presupposed in the Etymologies, but Tolkien would later call #10 formen instead.
Manwë noun "Blessed Being" (Letters:283), the Elder King and Lord of the Valar, spouse of Varda. The name is adopted and adapted from Valarin Mānawenūz; names ending in -wë were already frequent in Quenya _(WJ:399). _In the Etymologies derived from MAN, WEG.Cf. Mánwen, Mánwë the oldest Quenya forms of Manwë, closer to the Valarin form (WJ:399). Lower-case manwë in LR:56. Ablative Manwello, VT49:24 (in this source Tolkien indicated that lo Manwë is the preferred way of saying "from Manwë", but this was apparently a short-lived idea; see lo). Masc. name Manwendil "Manwë-friend; one devoted to Manwë" (UT:210). In the pre-classical Tengwar system presupposed in the Etymologies, Manwë was also the name of letter #22 (VT45:32), which tengwa Tolkien would later call vala instead changing its Quenya value from m to v.
-o (2), also -ó, "a person, somebody", pronominal suffix (PM:340)
nassëperson, an individual
nassë (1) "a person, an individual" (VT49:30). Also translated "true-being" (pl. nasser is attested), the inner "true" being of a person. With a pronominal suffix in the form nassentar "their true-being" (PE17:175, cf. -nta #2), in the source referring to the "true" spiritual nature of the Valar, as hidden within their visible shapes. The word nassentar would seem to be plural, *"their true-beings". Not to be confused with the verb nassë/násë "he/she is"; see ná #1.
námo (2) noun "a person, somebody" (PM:340 writers may prefer the synonym quén to avoid confusion with # 1)
The name Finwë is said to be one of the oldest recorded names of the Eldar. It is not certain if Finwë had any clear meaning, but it can be analyzed as fin- (derived from Common Eldarin PHIN "hair") + -wë (suffix generally used for male names).