Im trying to find my granfather i really dont have to much imfo ?

So if anyone can help with this little info I have dat would be amazing!! Well his name is Perry Simpson I was told he worked on the railroads and was from shreveport Louisiana I believe his mothers name is Alpha or Alphia Simpson my mother was also told that she has a brother who's 8 yrs older than she is my mothers name is suzette and her mothers name is Dorothy! So if anyone can help with that little info it would help tons :)