He didn't call his father and mother 'Father' and 'Mother' but Harold and Alberta. They were very up to date and advanced people. They were vegetarians, non-smokers and teetotalers, and wore a special kind of underclothes. In their house there was very little furniture and very few clothes on the beds and the windows were always open.
C. S. Lewis (2009). “The Voyage of the Dawn Treader: The Chronicles of Narnia”, p.1, Harper Collins