Zacharias Jacobus Prinsloo - Zacharias Jacobus Prinsloo date of birth

The "FORM OF INFORMATION OF A DEATH: ORD. No 8 OF 1902" provides a precise age at death on 2 June 1918 of seventy years six months + nineteen days. This implies the DOB was 14 Nov 1847 (if you include the day of death in his age). This corresponds to the birthdate in the baptismal record for Zacharias Johannes Prinsloo son of Hendrik Petrus Prinsloo and Christina Petronella de Beer. I concluded that the name in the birth record is in error as the name of his father and the birthday corroborates it, and I learned over the years that such errors are not uncommon.