Reading a Book of Wondrous Beasts
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The Caladrius sounds like a manifestation of Shallya, a good description for a healing blessing or helpful effect at a shrine.
also see https://en.wikipedia.org/wiki/Caladrius
The Carestes 'skull in sand' makes it a good Nehekharan desert or Badlands creature.
Hercinia would be found in fey woods
Yena would be found in the Southlands, it is the origin of the leucrotta of D&D (added to my Southlands work)
Edited by valvorik