Can a person be baptized after his death?

I don't know whether my grandfather was a believer or not but he did mention that, "As long as you are a good person, you will not go to hell". I grew up believing in that, but as I have learned, we can only be saved through Christ. My grandfather was a Buddhist, while all of his children and grandchildren are Christians. He died of heart attack 7 years ago when I was 15. Soon after he passed away, a priest whom my mother called, recited some prayers and baptized him by the Christian name of Joseph. But I am not sure if he can be saved by this method. 
PS: I'm sorry for bad English  

Clarify • Share • Report • Asked April 23 2015 • Ilona Andrew