How did you come up with the birth dates of William and Martha's children considering the fact that in 1759 William, Rebecca , Elizabeth , Sampson and Henry were placed under guardianship meaning they were under 21 years of age at that time. This is per the court records of Brunswick County Va. Also at the time of William Johnson's death before Feb 1759 Martha was still living and was an executor of the will with her son Nathaniel. This would make her a 100 years old. Unheard of at that time period.
