Some rare (but non made up) name I’ve recently come across (many of them Cornish), wanted to share and gauge opinions!
Also shout out your rare treasures! 
Immilla
Calytrix
Elestren
Prideaux
Zennor
Meraud
Ysella
[name_f]Ismene[/name_f]
[name_f]Ferelith[/name_f]
[name_f]Lethe[/name_f]
[name_f]Niobe[/name_f]
[name_f]Galilea[/name_f]
[name_f]Melusine[/name_f]
Philou
[name_f]Zerlin[/name_f]
[name_f]Viridis[/name_f]
Rupinder
[name_f]Elixane[/name_f]
Immilla: I can see this working, but I prefer [name_f]Imogen[/name_f] or [name_f]Imelda[/name_f].
Calytrix: this is cool, I love -trix names!
Elestren: this is a lovely name!!
Prideaux: not a fan, it feels more like a place or surname.
Zennor: gorgeous! I’d use this for a boy.
Meraud: OK, I can definitely see it working.
Ysella: gorgeous!
[name_f]Ismene[/name_f]: beautiful!
[name_f]Ferelith[/name_f]: I prefer [name_u]Meredith[/name_u], but this is pretty.
[name_f]Lethe[/name_f]: like the river in Hades? Not sure about this, though there’s nothing unpleasant about the sound. I like [name_m]Lev[/name_m], [name_m]Liev[/name_m] and [name_m]Leif[/name_m].
[name_f]Niobe[/name_f]: sounds like [name_f]Naomi[/name_f] with a cold.
[name_f]Galilea[/name_f]: this is very pretty, and a strong namesake for a little girl.
[name_f]Melusine[/name_f]: pretty, though I prefer [name_f]Melisande[/name_f] (and [name_f]Corisande[/name_f]).
Philou: also very pretty, I really like [name_m]Philo[/name_m] for a boy.
[name_f]Zerlin[/name_f]: this would be an awesome middle name, a la [name_m]Merlin[/name_m]!
[name_f]Viridis[/name_f]: like this one a lot - I’d use it for a boy.
Rupinder: not too keen on this.
[name_f]Elixane[/name_f]: nms, but it’s a pretty name and could definitely work.
The only one that appeals to me is [name_f]Galilea[/name_f].
Ysella, [name_f]Ferelith[/name_f], [name_f]Niobe[/name_f] and [name_f]Melusine[/name_f] are my favourites! They’re all on my list as well, and I adore them!
I also enjoy Elestren, Zennor, Meraud, [name_f]Ismene[/name_f], Philou, [name_f]Elixane[/name_f] and [name_f]Lethe[/name_f], but there’s something about all of them that’s making me sy away. I’m not so into the -lest- sound of Elestren, Zennor is too close to [name_f]Azenor[/name_f]/[name_f]Leonor[/name_f] which I prefer, I have so many Mer- names on the list already, and I do love most of them more than Meraud, [name_f]Ismene[/name_f] is sweet but ultimately too full of the EE sound which I quickly tire of, Philou too close to [name_m]Philo[/name_m] and perhaps too whimsical, [name_f]Elixane[/name_f] loses agains [name_u]Alix[/name_u] and Rixende for me, and I don’t like how it could be mistaken for a kre8iv choice, it just mimics too much of what people are doing in that department. [name_f]Lethe[/name_f] is great, I might consider adding her, except I alredy have [name_f]Leda[/name_f], [name_f]Lore[/name_f], [name_f]Lark[/name_f] and Leto…
Immila feels too made up, and [name_f]Imelda[/name_f] is a sweet unusual alternative I would greatly prefer. Calytrix is cool, but too much so for me. I’m not into the sound of Prideaux or the complexity. I struggle with G names in general, [name_f]Galilea[/name_f] is not for me. [name_f]Zerlin[/name_f] sounds very heavy to me, and it feels made up, and is too close to [name_m]Berlin[/name_m]. Rupinder has a really unattractive sound to me, not sure if it’s the Rup- or the -der or the combination, but neither feels feminine to me. [name_f]Viridis[/name_f] is intriguing but ultimately it’s the sound I dislike here as well. I prefer [name_f]Viridiana[/name_f] by a milestone!
Thanks for responses, all! Any other opinions?