[BnBlFlag]

When did C.S. Lewis convert? I believe you are mistaken about him.

[longtermmemmory]

see Narnia

[AnAmericanMother]

I think he's talking about conversion to Christianity, not Catholicism. Lewis was raised Christian but fell away and became an atheist, then came back to the faith in his late twenties or early thirties.

Lewis was raised Church-of-Ireland (i.e. Anglican) in Belfast. So Catholicism was a big no-no, and that stuff you learn early is hard to shake. The fact that he was able to be friends with J.R.R. Tolkien is a triumph of good will and charity over upbringing.

Lewis's view were theologically very "high", although he didn't like to discuss the low-middle-high divisions within Anglicanism. He might have eventually become a Catholic, but for his upbringing and the remaining prejudice against Catholics in England even in the 30s and 40s.