Many years ago I found myself at a tea house in a small town in Egypt with a bunch of locals I had just met. They were a mixture of Muslims and Coptic Christians. I was surprised to find out that one of the Copts was called Mohammed. One of his friends explained to me that his mother had had four children before him and all had died. When she was pregnant with him, she consulted some kind of a village wise woman who told her to give him a Muslim name, which she did, and there he was. It didn't convert them to Islam or anything, it just was what it was. I remember a lot of jokes being made by those of each faith about the other and everyone laughing. Sadly, I doubt that this would happen today.