Not a conversion story but a lovely story I think you may enjoy. I have always been an atheist and so my children have had little exposure to church. When my son was about 4 we were headed to a chapel service that we were attending out of family loyalty. I started to explain a few things about what it would be like, since he had never been in church before. I had hardly spoken when he interrupted me;
"Mum, you know Jesus Christ and God?"
"Why are they named after swear words?"