Yes. The dates on gravestones are typically done based solely on what the family says, not on any official records. I have found many gravestone errors. The gravestone of one of my ancestors says he died in 1895, even though he appears in the 1900 census. When I contacted the cemetery, they confirmed that he was buried in 1905. What happened was that when his wife died several years later, a new gravestone was made to include the husband and the wife. Someone screwed up his date of death on the new stone.
