The average person may find it difficult to imagine living long enough to see one great-grandchild. Hester Ford, however, is still going strong after having more than 200 great-grandchildren and great-great-grandchildren.

The Lancaster, South Carolina native, who is the oldest living American, celebrated another birthday on Saturday, 6ABC reported. But there is some confusion about her exact age. While her family says she was born in 1905, census documents reveal her birth year as 1904, making her 116 years old. What is for certain is that she gave birth to 12 children, who then birthed Ford's 48 grandchildren, who then gave life to her more than 200 great-grandchildren and great-great-grandchildren.