Tashlan

Tashlan was a name that combined Aslan and Tash into one. It was used to try to make Narnians believe that Aslan and Tash were one and the same. Lewis presents them as being different beings, but also has Aslan say that any prayer for something good directed towards Tash, comes to him, and any prayer for something evil directed towards Aslan, comes to Tash. In that sense, Lewis appears to be contending that it is not the name used to address God in prayer that is significant, but the good or bad intent of the person praying.