Lamb Cemetery

I am looking for information on the birth and death of Wayne Brown Williams, son of George Harold and Lela Williams.He was born c 1928 and hit by a truck and killed at about age 9 (c 1937).I think he was born in Fairfax, but may have died elsewhere. I do know that he was buried in Lamb Cemetery in Fairfax.He is said to have a tombstone with a train on top of it.I need info on date and place of birth, date and place of death.This may be on the grave marker.Can anyone help?Are there birth and death records from this county available online?Thanks so much!