As a hobby, I gather names that are not on Nameberry and try to find out their meanings and origins. However, I’ve come across several names that I can’t find any information about online. I was wondering if perhaps anybody else had any knowledge about any of these names? Thank you so much in advance!
Etisel
Santarella
Cherrone
Amazetta
Amizetta
Kelvie
Kastantas
Jaudine
Marantha
Flelekia
Wako
Tehue
Jahavi
Metlar
Emergene
Sirvilla
Lilola
Santarella - can translate to ‘sanctify her’ in Italian or it could be a variation of Santarelli, meaning ‘sanctorum’ or to do with saints in general
Amazetta - could be ‘Ama’ with the suffix ‘zetta’ - [name_f]Ama[/name_f] from amare meaning love - or from amal meaning unceasing?
Jaudine - possibly an invented name, blending a J- name with Claude/Claudine?
Emergene → probably from the word ‘emerging’, a spin on [name_f]Imogen[/name_f], or a play on the Turkish name, Mergen?
Jahavi - a spin on [name_f]Jahnavi[/name_f], meaning ‘daughter of Jahnu’ or of ‘Jahve’ or Jehovah (linked to Yahweh)
I could be mistaken, but Marantha looks like a truncated form of [name_f]Amarantha[/name_f]. 
Kelvie to me looks like it probably originated as a diminutive of Kelvin (whose own etymological origin is disputed).
Kastantas looks like a Constantine variant to me, and with a Google search I’m finding info on a Lithuanian folktale about a boy with the name, as well as a few LinkedIn profiles/obituaries/Ancestry.com records of bearers with Lithuanian surnames (plus one with a Latvian surname). The typical Lithuanian Constantine variant is Konstantinas, but maybe Kastantas is an uncommon-but-established variant? Or it could be that Kastantas is to Konstantinas what Constant is to Constantine? Or just a completely unrelated Lithuanian name. I’m not familiar enough with Lithuanian names to know more.
I checked it out on my Lithuanian names website and it’s registered as having only been used 8 times between 1889 and 2020, so I think this tracks! It’s listed as being of Latin origin so I definitely think it’s a Constantine variant.
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According to BtN Liliola is just another name that means ‘lily’, which makes sense to me! It also mentions that its main namesake is “Liliola, an abbess of Saint-Jean d’Arles” (a monastery) in the 500s. It may derive from Gigliola, in which case it may mean lily or it could mean young goat.