Thanks, Judge !
There's some, um, tangential context in recent 'Long Weekend' thread in critique area. Princess Penumbra's aunts are not really (d)evil-queens, but they're certainly drawn that way.
;-)
'Euphorbia' would be good, as notoriously toxic. I'd short-listed her from my own search, also 'Atramentia', which has an interesting ring. I've found a list of ~900 dark minerals which may provide a few more candidates after I cull the many kin of 'JohnSmithite'...
Funny, there's a distinct lack of dark synonyms beginning with 'J'.
Thankfully, I've several unwritten chapters before I *must* pick names.
What really bugs me is that 'PP' just popped up, prompting a creative cascade, but my brain then froze.
FWIW, I've retconned the 'no name' issue into the story. To make their pet demon-spawn fully cognizant of her heritage, the Bretheren must tell her her name. (Is that grammatical ??) She'll recognise her spawn-name when she hears it. Of course, fully empowered, she may then tear them limb from limb for impertinence, claw out their livers and gorge on their gizzards...