More like Mirror, Mirror

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EarthseaUniverse
universe19 books1964
Epic fantasy, about wizards, set in secondary world.
“There is a lesson every wizard of Earthsea learns young: to know a thing's true name is to hold its whole being, and to speak it is to move the balance of the world.”
from the catalogue
Start with A Wizard of Earthsea →
includes Earthsea Cycle
Confessions of an Ugly StepsisterNovel
Gregory Maguirestandalone novel1999
About identity and class conflict, set in renaissance and early modern and europe.
“In 2002, the book was adapted into a TV movie of the same name directed by Gavin Millar.”
from the catalogue
LilithNovel
George MacDonaldstandalone novel1895
Eerie in tone, about identity, set in otherworld.
FolktalesSeries
series3 books1978
Set in secondary world.
“Almost 20 years later, McKinley returned to the same material with her 1997 novel Rose Daughter.”
from the catalogue
Start with Beauty →
The Lion of Boaz-Jachin and Jachin-BoazNovel
Russell Hobanstandalone novel1973
Literary & general, about identity, set in contemporary and british isles.
“Initially appearing to be written as a kind of fable, Boaz-Jachin and Jachin-Boaz are a father and son, both map-makers; the narrative then places both father and son in contemporary London.”
from the catalogue
The Forgotten Beasts of EldNovel
Patricia A. McKillipstandalone novel1974
About wizards and coming of age, set in secondary world.