Morgana LeFay? Magician's Nephew Spoilers

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Beginning of Chapter 2 (Digory and his Uncle). Uncle Andrew tells
Digory about his godmother Mrs Lefay (who had fairy blood) telling him
to destroy a box. Andrew did not do so. He eventually discovered that
the box contained dust from another universe, and put the dust into
rings that would transport people to and from said universe. Was this
Mrs Lefay and/or her husband related to Morgana LeFay (the sorceress who
messed up King Arthur)?