I think that some Atheist change for some reasons like :
1.He(she) believe had received a kind of revelation.
2.Fear of death at an old age.
3.Fear of hell if you're a "weak atheist".
etc...
These link can maybe give you a light :
1.List of converts to Judaism from non-religious backgrounds
2.List of converts to Christianity from nontheism
3.List of converts to Islam from nontheism
1.He(she) believe had received a kind of revelation.
2.Fear of death at an old age.
3.Fear of hell if you're a "weak atheist".
etc...
These link can maybe give you a light :
1.List of converts to Judaism from non-religious backgrounds
2.List of converts to Christianity from nontheism
3.List of converts to Islam from nontheism