#The royal implications and brand recognition are both deliberate and reasonable to their stations

[waitingforsecretsouls]

I'll always maintain that (Crown Prince!) Fëanáro gave his sons names befitting Princes and future Kings of the Ñoldor, as (King!) Finwë himself did for his sons. They're basically dynastic names and given how his sons are Princes and it's the schema he and his half-brothers were named for as well, it's difficult for me to see anything wrong with that. These people are royalty afterall, which means they're figures of public and to a certain extent political life by matter of birth.

It always seemed to me that father-names are the official names used for the political sphere (honestly something like titles almost), at least among the Finwëans (not least because their fathers tend to be the members of the royal family while their mothers marry in). Something I feel supported by the announcement of it in an official ceremony (Essecarmë), and which makes the contrast between the Fëanorians general tendency to prefer their mother-name and their half-brothers/cousins general preference for father-names very interesting (Obviously you can argue that it's simple personal preference or speculate about parental relationships (such as is canonically the case in at the least Fëanáro's case, though it's also still partly a political statement in its own right), but the point of this post is to go a little more political).

The Fëanorians are heirs to Finwë as the Elder House, but alone out of their wider family they're not primarily or even tangentially associated with one of the royal residencies. Rather, they spend their time travelling Aman to its outermost edges, and when not busy with exploration, are guests in Aulë or Oromë's Halls. They do not seem to have been involved in "politics" at all, prior to the Unrest, much less established in Tirion. In light of the abovementioned hypothesis regarding father-names political associations, the primary use of their mother-names serves to contribute to this air of an already rather casual conduct and presentation (see also Maitimo's comparatively 'casual' epessë (compared to eg. Artanis' or Gil-Galad's) in use specifically among close family, or the Ambarussa's nicknames (Given how they're not described as epessë) of 'First- and Second-Russa', which is not even mentioning the Fëanorians shortened father-names which could be considered potential 'nicknames' as well and even if not certainly imply a certain disregard for formality).

I'd argue that their unique status as not only descendants from someone confirmed to be neither royalty nor nobility nor associated with Tirion in any particular way in Nerdanel (which is not to claim that all Ñoldor of Tirion were career-politicians as a matter of course), but also the general fact of a less official and courtly daily environment and social contacts, e.g. seen in both Fëanáro's and Maitimo's notably close relationship to Nerdanels father Mahtan, both via kinship but moreso shared close relations with Aulë (with whom the Sons of Fëanáro additionally likely would have had closer contact growing up than Finwë, given aforementioned shared close association with Aulë and his halls yet Fëanáro explicitly not associated with Tirion as residency and noted to be living apart from the Finwë and Indis family unit even prior to founding his own family-branch) would have played an additional role in the development of their more informal manner (not that I see them as incapable of courtly manners, mind you (+ given Fëanáro's 'let them sa-si' comment were weaned on linguistic discourse at the very least, so no slouches in the academic department as well (Carnistir becoming economist prime in Beleriand as just one of the more concrete examples)) , they just canonically are very frank and to the point. Something I can see working favourable in the establishment of their many cross-cultural alliances in Beleriand).

I also think Nerdanel's lack of royal status might have played a role in keeping the mother-names she gave comparatively simple for the most part, making reference to their appearance and disposition (or, in Makalaurë's and the Ambarussa's case, prophetic insight, but even in the latter only because Fëanáro insisted on giving them separate names rather than just 'Ambarussa') in a less pompous or high-brow manner (compared to the mother-names given by noble-born Indis or of equally royal lineage Eärwen to their eldest in particular, Obviously this is more of a general tendecy, as we e.g. also get a prophetic name in Aikanáro, but I stand by Nerdanel keeping it notably simple by comparison).

The Ñolofinwëans in contrast are associated primarily with Tirion via Ñolofinwë, who, unlike Arafinwë, isn't mentioned to have had close contacts and frequent visits to Alqualondë, or primarily travel like Fëanáro and sons. Lack of additional crafts also leaves his later political plotting as only point of reference we get on his potential activities prior, making him a likely career-politician (which coheres with his better PR-management choices in the eventual feud and his kingly ambitions). Ñolofinwë married Anairë, who is most likely a Ñoldor of Tirion, given the lack of additional information on her (that mostly tends to get reserved for noteworthy deviations from "the norm", see also descriptions of hair-colour, where only deviations from the standart dark brown get explicit descriptions, or even regarding Finwëan wives, e.g. Indis, aside from the circumstances of her marriage, most noted for being a Vanyar and Eärwen a Falmari, Nerdanel for falling outside the beauty norms expected of the wife of a prince). Given that we do not get her children's mother-names, it's impossible to tell whether she added similarly ambitious/declaratory touches into them as Indis seemingly did for her sons.

The only child of Ñolofinwë singled out of the bunch during life in pre-Unchaining of Melkor Valinor is their daughter Írissë, for often going hunting in the forests with the sons of Fëanáro (to the point the narration sees fit to clarify that no romance was involved). While undoubtedly a free and adventurous spirit, the likely fact that she lived life in Aman primarily in Tirion would also add a neat layer to her readiness to accompany Turukáno (and eventually return) to Gondolin, the Tirion replica par exellence. While less overtly ambitious than her brothers or father I still propose that she was more comfortable in or at the very least used to the more formal environment of politics and appearances than often credited to her. Leaving its history of development aside, the fact that her father-name has a sindarized form (Íreth) which does not correspond to her Sindarin name actual in use (Aredhel) the argument can be made that her father-name wouldn't have been her preferred Quenya name, but rather her afaik unknown mother-name.

Given that we get no additional information on their whereabouts, it therefore also seems likely her brothers would have primarily been active in Tirion, and indeed later emerge as some of their fathers chief political supporters, Findecáno as primary Ñolofinwëan leader in the first half of the exile, and in Turukano's case commanding an eventual large following in his own right (thus fitting the pattern of favouring their more politically loaded names due to primary involvement in said social sphere).

The Arafinwëans are interesting, due to echoing Ñolo- and Arafinwë, descending from two royal lines, in their case both Nõldor (Arafinwë) and Falmari (Eärwen), yet firmly self-identifying as Ñoldor. Which I'd argue their deliberate use of father-name over mother-name signifies or at the least in effect serves to enhance, in addition to general royal gravitas. Given Melkor's warning to Ñolo- and Arafinwë that:

"Beware! Small love has the proud son of Míriel ever had for the children of Indis. Now he has become great, and he has his father in his hand. It will not be long before he drives you forth from Túna!"

, it also seems like, despite his distance from the family feud and marriage into the Falmari of Alqualondë, in whose company he often shared ("[...]he often sought peace among the Teleri, whose language he learned"), Arafinwë and his family still primarily resided in Tirion rather than Alqualondë. We later also see that at least Findaráto and Artanis out of their siblings harbour grand political ambitions such as ruling their own realms in Middle-Earth (mentioned as their motive for participating in the exile), while of Artanis we furthermore get told of a steep and ambitious participation in Ñoldorin academia (As for Arafinwë, given how Eärwen gave his own mother-name (Ingoldo) to their son Findaráto, it feels safe to say it wasn't the one her husband was primarily using. But in his case I'd even argue that his mother-name was the more explicit political statement, so there was no escaping the drama. As eventually happens, with ruling over the remnants of the Ñoldor-in-Aman. Though, funnily enough, it's Arafinwë rather than Findaráto for whom one can argue for a prophetic rather than strictly political nature of said name, even if I myself do not consider it as such).

Basically, I think that keeping in mind the more official nature of the Finwëan father-names adds fun potential additional layers to the world-building and characters in question.