"Though Lewis did not explain the presence of Father Christmas in The Lion, the Witch and the Wardrobe, given his methodology of “supposal” it is reasonable to formulate an explanation in these terms, rather than seeking allegorical coincidences; clearly, in the context of the internal coherence within the story, this explanation makes a certain sense. Father Christmas’ presence in The Lion, the Witch and the Wardrobe may at first generate confusion and skepticism from those who fail to see that he is a “gift-bearer” sent by Aslan. In Platonic terms, however, he is ultimately a gift-bearer sent by God, Aslan’s Father, the Emperorover- the-Sea."
Brazier, P. H.
"Why Father Christmas Appears in Narnia,"
Sehnsucht: The C. S. Lewis Journal: Vol. 3
, Article 6.
Available at: https://digitalcommons.georgefox.edu/cslewisjournal/vol3/iss1/6