I've read the chronicles by CS Lewis and I've read his Sci-Fi books, too. Also read The Screwtape Letters. Great books!
There was a character in one of his Sci-Fi books named "Ransom." It confused me a little at the time, but the name has really stuck with me. I might go back and find which of the books it is and re-read it. It might have been Peralandra, I think.
Yep, I'm aware of all the symbolism.
When I was home-schooling my boys, I had to make up a name for "my" school. The boys and I chose "Aslan." LOL I took them out to lunch on my birthday and the waitress asked why they were out of school. Told her they went to private school and the "principal" had declared a day off. She asked what school they went to so I told her, Aslan. She thought she had heard of it.

The boys and I could hardly keep a straight face!
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Psalm 119:105 Thy word is a lamp unto my feet, and a light unto my path.